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DNS lookup

Everything DNS says about a domain: traced from the root servers down, every record type asked of the domain's own nameservers, each nameserver checked, then every hostname and policy record it points at followed, with SPF, DMARC, DKIM and DNSSEC checked along the way.

Try example.com, gmail.com, www.github.com, dnssec-failed.org, 1.1.1.1. A URL, e-mail address or IP address works too.

gmail.com

Zone gmail.com301 queries in 0.7 s2026-11-09 05:00:44 UTCNot DNSSEC-signed

WHOIS for gmail.com →TextJSON
  • Warning Nameservers disagree on the SOA serial (1016230534 on ns1.google.com, ns3.google.com; 1016687210 on ns2.google.com, ns4.google.com). Normal when two DNS providers serve the zone, each numbering its own copy; otherwise some servers haven't picked up the latest change.
  • Note DMARC policy is p=none: failing mail is reported but still delivered.
  • Note gmail.com isn't signed with DNSSEC, so resolvers can't tell forged answers from real ones.

Records

Asked directly of ns4.google.com (216.239.38.10), an authoritative server: no cache in between, so these are the live values.

A IPv4 address

300A142.251.20.18
300A142.251.20.83
300A142.251.20.17
300A142.251.20.19

AAAA IPv6 address

300AAAA2a00:1450:4001:c17::12
300AAAA2a00:1450:4001:c17::53
300AAAA2a00:1450:4001:c17::11
300AAAA2a00:1450:4001:c17::13

NS Nameservers

345600NSns2.google.com.
345600NSns4.google.com.
345600NSns3.google.com.
345600NSns1.google.com.

SOA Zone authority

60SOAns1.google.com. dns-admin.google.com. 1016687210 900 900 1800 60

Primary ns1.google.com · contact dns-admin@google.com · serial 1016687210 · refresh 15 min · retry 15 min · expire 30 min · negative TTL 1 min

MX Mail servers

3600MX40 alt4.gmail-smtp-in.l.google.com.
3600MX20 alt2.gmail-smtp-in.l.google.com.
3600MX10 alt1.gmail-smtp-in.l.google.com.
3600MX5 gmail-smtp-in.l.google.com.
3600MX30 alt3.gmail-smtp-in.l.google.com.

TXT Text

300TXT"yahoo-verification-key=dKYwfVbaxatmcXiXy6LDAxMRirqpOq5tj98iJv9qWVk="
300TXT"globalsign-smime-dv=CDYX+XFHUw2wml6/Gb8+59BsH31KzUr6c1l2BPvqKX8="
300TXT"yahoo-verification-key=+eZwIPSgRxkAUzDtqT8Qhk+j4A1JF6V/wtGoyGTkELY="
300TXT"v=spf1 redirect=_spf.google.com"
300TXT"_n365txknyxaxmmyyn7czzugzuiap479"

CAA Allowed certificate authorities

86400CAA0 issue "pki.goog"
ANY query: 24 records
300A142.251.20.83
300A142.251.20.17
300A142.251.20.19
300A142.251.20.18
300AAAA2a00:1450:4001:c17::11
300AAAA2a00:1450:4001:c17::13
300AAAA2a00:1450:4001:c17::12
300AAAA2a00:1450:4001:c17::53
345600NSns3.google.com.
300TXT"_n365txknyxaxmmyyn7czzugzuiap479"
60SOAns1.google.com. dns-admin.google.com. 1016687210 900 900 1800 60
345600NSns4.google.com.
300TXT"v=spf1 redirect=_spf.google.com"
3600MX30 alt3.gmail-smtp-in.l.google.com.
3600MX40 alt4.gmail-smtp-in.l.google.com.
3600MX20 alt2.gmail-smtp-in.l.google.com.
300TXT"globalsign-smime-dv=CDYX+XFHUw2wml6/Gb8+59BsH31KzUr6c1l2BPvqKX8="
300TXT"yahoo-verification-key=dKYwfVbaxatmcXiXy6LDAxMRirqpOq5tj98iJv9qWVk="
300TXT"yahoo-verification-key=+eZwIPSgRxkAUzDtqT8Qhk+j4A1JF6V/wtGoyGTkELY="
345600NSns1.google.com.
3600MX10 alt1.gmail-smtp-in.l.google.com.
3600MX5 gmail-smtp-in.l.google.com.
345600NSns2.google.com.
86400CAA0 issue "pki.goog"

No records of type CNAME, DNAME, HTTPS, SVCB, SRV, NAPTR, DS, DNSKEY, CDS, CDNSKEY, NSEC3PARAM, TLSA, SSHFP, LOC, HINFO, RP, URI, SPF, OPENPGPKEY, ZONEMD, CSYNC, PTR.

Resolution trace

  1. .asked d.root-servers.net 199.7.91.136.2 ms

    Referral to com. signed (1 DS)

    • a.gtld-servers.net 192.5.6.30 2001:503:a83e::2:30
    • b.gtld-servers.net 192.33.14.30 2001:503:231d::2:30
    • c.gtld-servers.net 192.26.92.30 2001:503:83eb::30
    • d.gtld-servers.net 192.31.80.30 2001:500:856e::30
    • e.gtld-servers.net 192.12.94.30 2001:502:1ca1::30
    • f.gtld-servers.net 192.35.51.30 2001:503:d414::30
    • g.gtld-servers.net 192.42.93.30 2001:503:eea3::30
    • h.gtld-servers.net 192.54.112.30 2001:502:8cc::30
    • i.gtld-servers.net 192.43.172.30 2001:503:39c1::30
    • j.gtld-servers.net 192.48.79.30 2001:502:7094::30
    • k.gtld-servers.net 192.52.178.30 2001:503:d2d::30
    • l.gtld-servers.net 192.41.162.30 2001:500:d937::30
    • m.gtld-servers.net 192.55.83.30 2001:501:b1f9::30

    170.247.170.2 failed: NOERROR

  2. com.asked l.gtld-servers.net 192.41.162.306.9 ms

    Referral to gmail.com. unsigned delegation

    • ns2.google.com 2001:4860:4802:34::a 216.239.34.10
    • ns1.google.com 2001:4860:4802:32::a 216.239.32.10
    • ns3.google.com 2001:4860:4802:36::a 216.239.36.10
    • ns4.google.com 2001:4860:4802:38::a 216.239.38.10

    192.12.94.30 failed: NOERROR

  3. gmail.com.asked ns3.google.com 216.239.36.1016 ms

    Answer (authoritative):

    gmail.com.300A142.251.20.18
    gmail.com.300A142.251.20.17
    gmail.com.300A142.251.20.83
    gmail.com.300A142.251.20.19

    216.239.32.10 failed: NOERROR

Nameservers

Every address of every nameserver, asked for gmail.com's SOA. "Parent" means the com zone delegates to it; "zone" means gmail.com lists it itself.

NameserverListed inAddressStatusSerialTime
ns1.google.comparent + zone2001:4860:4802:32::a glueauthoritative101623053414 ms
216.239.32.10 glueauthoritative101623053413 ms
ns2.google.comparent + zone2001:4860:4802:34::a glueauthoritative101668721028 ms
216.239.34.10 glueauthoritative101668721027 ms
ns3.google.comparent + zone2001:4860:4802:36::a glueauthoritative101623053415 ms
216.239.36.10 glueauthoritative101623053413 ms
ns4.google.comparent + zone2001:4860:4802:38::a glueauthoritative10166872107.4 ms
216.239.38.10 glueauthoritative10166872106.0 ms

DNSSEC

gmail.com isn't signed: no DS at the parent and no DNSKEY in the zone.

Email

Mail servers (MX)

3600MX5 gmail-smtp-in.l.google.com.
3600MX10 alt1.gmail-smtp-in.l.google.com.
3600MX20 alt2.gmail-smtp-in.l.google.com.
3600MX30 alt3.gmail-smtp-in.l.google.com.
3600MX40 alt4.gmail-smtp-in.l.google.com.

SPF

v=spf1 redirect=_spf.google.com

Needs 1 of 10 DNS lookups. Expanded:

  • redirect=_spf.google.com
    • ip4:74.125.0.0/16
    • ip4:209.85.128.0/17
    • ip6:2001:4860:4864::/56
    • ip6:2404:6800:4864::/56
    • ip6:2607:f8b0:4864::/56
    • ip6:2800:3f0:4864::/56
    • ip6:2a00:1450:4864::/56
    • ip6:2c0f:fb50:4864::/56
    • ~all

DMARC

v=DMARC1; p=none; sp=quarantine; rua=mailto:mailauth-reports@google.com

Policynone
Subdomain policyquarantine
Aggregate reports tomailto:mailauth-reports@google.com

DKIM

None of the 36 common selectors tried has a key. DKIM may still be set up under another selector: find it in the DKIM-Signature header (s=) of a mail from this domain.

Hosts and reverse DNS

Every hostname the records point at, resolved to its addresses; each address's PTR (reverse DNS), with ✓ where the PTR name resolves back to the same address.

HostAddressReverse DNS (PTR)
gmail.com
the name looked up
142.251.14.18pm-in-f18.1e100.net ✓
142.251.14.17pm-in-f17.1e100.net ✓
142.251.14.83pm-in-f83.1e100.net ✓
142.251.14.19pm-in-f19.1e100.net ✓
2a00:1450:4001:c17::11bx-in-f17.1e100.net ✓
2a00:1450:4001:c17::53bx-in-f83.1e100.net ✓
2a00:1450:4001:c17::13bx-in-f19.1e100.net ✓
2a00:1450:4001:c17::12bx-in-f18.1e100.net ✓
ns1.google.com
nameserver
216.239.32.10ns1.google.com ✓
2001:4860:4802:32::ans1.google.com ✓
ns2.google.com
nameserver
216.239.34.10ns2.google.com ✓
2001:4860:4802:34::ans2.google.com ✓
ns3.google.com
nameserver
216.239.36.10ns3.google.com ✓
2001:4860:4802:36::ans3.google.com ✓
ns4.google.com
nameserver
216.239.38.10ns4.google.com ✓
2001:4860:4802:38::ans4.google.com ✓
alt4.gmail-smtp-in.l.google.com
mail server (MX 40)
192.178.158.27lcdels-in-f27.1e100.net ✓
2404:6800:4013:813::1alcdels-in-f26.1e100.net ✓
alt2.gmail-smtp-in.l.google.com
mail server (MX 20)
172.253.152.26yulpptr-in-f26.1e100.net ✓
2a00:1450:4010:c22::1ayulpptr-in-f26.1e100.net ✓
alt1.gmail-smtp-in.l.google.com
mail server (MX 10)
142.250.147.27rd-in-f27.1e100.net ✓
2a00:1450:4025:c01::1ard-in-f26.1e100.net ✓
gmail-smtp-in.l.google.com
mail server (MX 5)
142.251.127.26lcfrai-in-f26.1e100.net ✓
2a00:1450:4001:c21::1blcfrai-in-f27.1e100.net ✓
alt3.gmail-smtp-in.l.google.com
mail server (MX 30)
192.179.20.27ncboms-in-f27.1e100.net ✓
2404:6800:4000:1027::1bncboms-in-f27.1e100.net ✓
imap.gmail.com
IMAP over TLS (_imaps._tcp.gmail.com)
64.233.167.108wl-in-f108.1e100.net ✓
64.233.167.109wl-in-f109.1e100.net ✓
2a00:1450:400c:c02::6cwn-in-x6c.1e100.net, wn-in-f108.1e100.net ✓
2a00:1450:400c:c02::6dwn-in-x6d.1e100.net, wn-in-f109.1e100.net ✓
pop.gmail.com
POP3 over TLS (_pop3s._tcp.gmail.com)
142.251.127.108lcfrai-in-f108.1e100.net ✓
142.251.127.109lcfrai-in-f109.1e100.net ✓
2a00:1450:4001:c21::6clcfrai-in-f108.1e100.net ✓
2a00:1450:4001:c21::6dlcfrai-in-f109.1e100.net ✓
smtp.gmail.com
Mail submission (_submission._tcp.gmail.com)
142.251.127.108lcfrai-in-f108.1e100.net ✓
2a00:1450:4001:c21::6clcfrai-in-f108.1e100.net ✓
calendar.google.com
CalDAV (_caldav._tcp.gmail.com) · CalDAV over TLS (_caldavs._tcp.gmail.com)
142.251.110.101bz-in-f101.1e100.net ✓
142.251.110.139bz-in-f139.1e100.net ✓
142.251.110.138bz-in-f138.1e100.net ✓
142.251.110.100bz-in-f100.1e100.net ✓
142.251.110.113bz-in-f113.1e100.net ✓
142.251.110.102bz-in-f102.1e100.net ✓
2a00:1450:4001:c21::8alcfrai-in-f138.1e100.net ✓
2a00:1450:4001:c21::65lcfrai-in-f101.1e100.net ✓
2a00:1450:4001:c21::71lcfrai-in-f113.1e100.net ✓
2a00:1450:4001:c21::66lcfrai-in-f102.1e100.net ✓

Public resolvers

What four public resolvers answer right now, from their caches. Highlighted values differ from the authoritative answer: either a recent change they haven't picked up yet (the TTL says how long until they do), or, for A and AAAA, a CDN or geo-routed site handing each resolver location its own addresses.

ResolverAAAAAMX
Cloudflare 1.1.1.1142.251.20.17
142.251.20.18
142.251.20.19
142.251.20.83
TTL 279
2a00:1450:4001:c13::11
2a00:1450:4001:c13::12
2a00:1450:4001:c13::13
2a00:1450:4001:c13::53
TTL 300
10 alt1.gmail-smtp-in.l.google.com.
20 alt2.gmail-smtp-in.l.google.com.
30 alt3.gmail-smtp-in.l.google.com.
40 alt4.gmail-smtp-in.l.google.com.
5 gmail-smtp-in.l.google.com.
TTL 1463
Google 8.8.8.8142.251.14.17
142.251.14.18
142.251.14.19
142.251.14.83
TTL 300
2a00:1450:4001:c15::11
2a00:1450:4001:c15::12
2a00:1450:4001:c15::13
2a00:1450:4001:c15::53
TTL 300
10 alt1.gmail-smtp-in.l.google.com.
20 alt2.gmail-smtp-in.l.google.com.
30 alt3.gmail-smtp-in.l.google.com.
40 alt4.gmail-smtp-in.l.google.com.
5 gmail-smtp-in.l.google.com.
TTL 826
Quad9 9.9.9.974.125.128.17
74.125.128.18
74.125.128.19
74.125.128.83
TTL 268
2a00:1450:4013:c02::11
2a00:1450:4013:c02::12
2a00:1450:4013:c02::13
2a00:1450:4013:c02::53
TTL 47
10 alt1.gmail-smtp-in.l.google.com.
20 alt2.gmail-smtp-in.l.google.com.
30 alt3.gmail-smtp-in.l.google.com.
40 alt4.gmail-smtp-in.l.google.com.
5 gmail-smtp-in.l.google.com.
TTL 40
OpenDNS 208.67.222.222142.251.14.17
142.251.14.18
142.251.14.19
142.251.14.83
TTL 300
2a00:1450:4001:c15::11
2a00:1450:4001:c15::12
2a00:1450:4001:c15::13
2a00:1450:4001:c15::53
TTL 300
10 alt1.gmail-smtp-in.l.google.com.
20 alt2.gmail-smtp-in.l.google.com.
30 alt3.gmail-smtp-in.l.google.com.
40 alt4.gmail-smtp-in.l.google.com.
5 gmail-smtp-in.l.google.com.
TTL 2139

Text dump

; DNS report for gmail.com
; 2026-11-09 05:00:44 UTC, 301 queries in 0.72 s, zone gmail.com

;; FINDINGS
;  [WARN] Nameservers disagree on the SOA serial (1016230534 on ns1.google.com, ns3.google.com; 1016687210 on ns2.google.com, ns4.google.com). Normal when two DNS providers serve the zone, each numbering its own copy; otherwise some servers haven't picked up the latest change.
;  [INFO] DMARC policy is p=none: failing mail is reported but still delivered.
;  [INFO] gmail.com isn't signed with DNSSEC, so resolvers can't tell forged answers from real ones.

;; RECORDS (authoritative, from ns4.google.com (216.239.38.10))
gmail.com.	300	IN	A	142.251.20.18
gmail.com.	300	IN	A	142.251.20.83
gmail.com.	300	IN	A	142.251.20.17
gmail.com.	300	IN	A	142.251.20.19
gmail.com.	300	IN	AAAA	2a00:1450:4001:c17::12
gmail.com.	300	IN	AAAA	2a00:1450:4001:c17::53
gmail.com.	300	IN	AAAA	2a00:1450:4001:c17::11
gmail.com.	300	IN	AAAA	2a00:1450:4001:c17::13
gmail.com.	345600	IN	NS	ns2.google.com.
gmail.com.	345600	IN	NS	ns4.google.com.
gmail.com.	345600	IN	NS	ns3.google.com.
gmail.com.	345600	IN	NS	ns1.google.com.
gmail.com.	60	IN	SOA	ns1.google.com. dns-admin.google.com. 1016687210 900 900 1800 60
gmail.com.	3600	IN	MX	40 alt4.gmail-smtp-in.l.google.com.
gmail.com.	3600	IN	MX	20 alt2.gmail-smtp-in.l.google.com.
gmail.com.	3600	IN	MX	10 alt1.gmail-smtp-in.l.google.com.
gmail.com.	3600	IN	MX	5 gmail-smtp-in.l.google.com.
gmail.com.	3600	IN	MX	30 alt3.gmail-smtp-in.l.google.com.
gmail.com.	300	IN	TXT	"yahoo-verification-key=dKYwfVbaxatmcXiXy6LDAxMRirqpOq5tj98iJv9qWVk="
gmail.com.	300	IN	TXT	"globalsign-smime-dv=CDYX+XFHUw2wml6/Gb8+59BsH31KzUr6c1l2BPvqKX8="
gmail.com.	300	IN	TXT	"yahoo-verification-key=+eZwIPSgRxkAUzDtqT8Qhk+j4A1JF6V/wtGoyGTkELY="
gmail.com.	300	IN	TXT	"v=spf1 redirect=_spf.google.com"
gmail.com.	300	IN	TXT	"_n365txknyxaxmmyyn7czzugzuiap479"
gmail.com.	86400	IN	CAA	0 issue "pki.goog"

;; TRACE
;  gmail.com A
;  . @d.root-servers.net (199.7.91.13) 6.2 ms [NOERROR qr]: referral to com.
com.		NS	a.gtld-servers.net.	; 192.5.6.30 2001:503:a83e::2:30
com.		NS	b.gtld-servers.net.	; 192.33.14.30 2001:503:231d::2:30
com.		NS	c.gtld-servers.net.	; 192.26.92.30 2001:503:83eb::30
com.		NS	d.gtld-servers.net.	; 192.31.80.30 2001:500:856e::30
com.		NS	e.gtld-servers.net.	; 192.12.94.30 2001:502:1ca1::30
com.		NS	f.gtld-servers.net.	; 192.35.51.30 2001:503:d414::30
com.		NS	g.gtld-servers.net.	; 192.42.93.30 2001:503:eea3::30
com.		NS	h.gtld-servers.net.	; 192.54.112.30 2001:502:8cc::30
com.		NS	i.gtld-servers.net.	; 192.43.172.30 2001:503:39c1::30
com.		NS	j.gtld-servers.net.	; 192.48.79.30 2001:502:7094::30
com.		NS	k.gtld-servers.net.	; 192.52.178.30 2001:503:d2d::30
com.		NS	l.gtld-servers.net.	; 192.41.162.30 2001:500:d937::30
com.		NS	m.gtld-servers.net.	; 192.55.83.30 2001:501:b1f9::30
com.	86400	IN	DS	19718 13 2 8ACBB0CD28F41250A80A491389424D341522D946B0DA0C0291F2D3D771D7805A
;  com. @l.gtld-servers.net (192.41.162.30) 6.9 ms [NOERROR qr]: referral to gmail.com.
gmail.com.		NS	ns2.google.com.	; 2001:4860:4802:34::a 216.239.34.10
gmail.com.		NS	ns1.google.com.	; 2001:4860:4802:32::a 216.239.32.10
gmail.com.		NS	ns3.google.com.	; 2001:4860:4802:36::a 216.239.36.10
gmail.com.		NS	ns4.google.com.	; 2001:4860:4802:38::a 216.239.38.10
;  gmail.com. @ns3.google.com (216.239.36.10) 16 ms [NOERROR qr aa]: answer
gmail.com.	300	IN	A	142.251.20.18
gmail.com.	300	IN	A	142.251.20.17
gmail.com.	300	IN	A	142.251.20.83
gmail.com.	300	IN	A	142.251.20.19

;; NAMESERVERS (SOA asked of each address)
;  ns1.google.com [parent+zone]
;    2001:4860:4802:32::a                    ok                        1016230534  14 ms
;    216.239.32.10                           ok                        1016230534  13 ms
;  ns2.google.com [parent+zone]
;    2001:4860:4802:34::a                    ok                        1016687210  28 ms
;    216.239.34.10                           ok                        1016687210  27 ms
;  ns3.google.com [parent+zone]
;    2001:4860:4802:36::a                    ok                        1016230534  15 ms
;    216.239.36.10                           ok                        1016230534  13 ms
;  ns4.google.com [parent+zone]
;    2001:4860:4802:38::a                    ok                        1016687210  7.4 ms
;    216.239.38.10                           ok                        1016687210  6.0 ms

;; DNSSEC: unsigned

;; EMAIL
;  SPF (1/10 lookups): v=spf1 redirect=_spf.google.com
;    redirect=_spf.google.com
;      ip4:74.125.0.0/16
;      ip4:209.85.128.0/17
;      ip6:2001:4860:4864::/56
;      ip6:2404:6800:4864::/56
;      ip6:2607:f8b0:4864::/56
;      ip6:2800:3f0:4864::/56
;      ip6:2a00:1450:4864::/56
;      ip6:2c0f:fb50:4864::/56
;      ~all
;  DMARC: v=DMARC1; p=none; sp=quarantine; rua=mailto:mailauth-reports@google.com

;; RELATED NAMES
; DMARC policy
_dmarc.gmail.com.	573	IN	TXT	"v=DMARC1; p=none; sp=quarantine; rua=mailto:mailauth-reports@google.com"
; MTA-STS policy id
_mta-sts.gmail.com.	293	IN	TXT	"v=STSv1; id=20190429T010101;"
; MTA-STS policy host
mta-sts.gmail.com.	300	IN	A	142.250.154.138
mta-sts.gmail.com.	300	IN	A	142.250.154.113
mta-sts.gmail.com.	300	IN	A	142.250.154.101
mta-sts.gmail.com.	300	IN	A	142.250.154.100
mta-sts.gmail.com.	300	IN	A	142.250.154.102
mta-sts.gmail.com.	300	IN	A	142.250.154.139
; SMTP TLS reporting (TLS-RPT)
_smtp._tls.gmail.com.	300	IN	TXT	"v=TLSRPTv1;rua=mailto:sts-reports@google.com"
; www address
www.gmail.com.	215	IN	A	142.251.20.18
www.gmail.com.	215	IN	A	142.251.20.17
www.gmail.com.	215	IN	A	142.251.20.83
www.gmail.com.	215	IN	A	142.251.20.19
; www address (IPv6)
www.gmail.com.	300	IN	AAAA	2a00:1450:4001:c0f::11
www.gmail.com.	300	IN	AAAA	2a00:1450:4001:c0f::13
www.gmail.com.	300	IN	AAAA	2a00:1450:4001:c0f::12
www.gmail.com.	300	IN	AAAA	2a00:1450:4001:c0f::53
; IMAP
_imap._tcp.gmail.com.	86400	IN	SRV	0 0 0 .
; IMAP over TLS
_imaps._tcp.gmail.com.	86400	IN	SRV	5 0 993 imap.gmail.com.
; POP3
_pop3._tcp.gmail.com.	86400	IN	SRV	0 0 0 .
; POP3 over TLS
_pop3s._tcp.gmail.com.	86400	IN	SRV	20 0 995 pop.gmail.com.
; Mail submission
_submission._tcp.gmail.com.	86400	IN	SRV	5 0 587 smtp.gmail.com.
; CalDAV
_caldav._tcp.gmail.com.	86400	IN	SRV	5 0 80 calendar.google.com.
; CalDAV over TLS
_caldavs._tcp.gmail.com.	86400	IN	SRV	5 0 443 calendar.google.com.

;; HOSTS
;  gmail.com (the name looked up)
;    142.251.14.18                           PTR pm-in-f18.1e100.net (confirmed)
;    142.251.14.17                           PTR pm-in-f17.1e100.net (confirmed)
;    142.251.14.83                           PTR pm-in-f83.1e100.net (confirmed)
;    142.251.14.19                           PTR pm-in-f19.1e100.net (confirmed)
;    2a00:1450:4001:c17::11                  PTR bx-in-f17.1e100.net (confirmed)
;    2a00:1450:4001:c17::53                  PTR bx-in-f83.1e100.net (confirmed)
;    2a00:1450:4001:c17::13                  PTR bx-in-f19.1e100.net (confirmed)
;    2a00:1450:4001:c17::12                  PTR bx-in-f18.1e100.net (confirmed)
;  ns1.google.com (nameserver)
;    216.239.32.10                           PTR ns1.google.com (confirmed)
;    2001:4860:4802:32::a                    PTR ns1.google.com (confirmed)
;  ns2.google.com (nameserver)
;    216.239.34.10                           PTR ns2.google.com (confirmed)
;    2001:4860:4802:34::a                    PTR ns2.google.com (confirmed)
;  ns3.google.com (nameserver)
;    216.239.36.10                           PTR ns3.google.com (confirmed)
;    2001:4860:4802:36::a                    PTR ns3.google.com (confirmed)
;  ns4.google.com (nameserver)
;    216.239.38.10                           PTR ns4.google.com (confirmed)
;    2001:4860:4802:38::a                    PTR ns4.google.com (confirmed)
;  alt4.gmail-smtp-in.l.google.com (mail server (MX 40))
;    192.178.158.27                          PTR lcdels-in-f27.1e100.net (confirmed)
;    2404:6800:4013:813::1a                  PTR lcdels-in-f26.1e100.net (confirmed)
;  alt2.gmail-smtp-in.l.google.com (mail server (MX 20))
;    172.253.152.26                          PTR yulpptr-in-f26.1e100.net (confirmed)
;    2a00:1450:4010:c22::1a                  PTR yulpptr-in-f26.1e100.net (confirmed)
;  alt1.gmail-smtp-in.l.google.com (mail server (MX 10))
;    142.250.147.27                          PTR rd-in-f27.1e100.net (confirmed)
;    2a00:1450:4025:c01::1a                  PTR rd-in-f26.1e100.net (confirmed)
;  gmail-smtp-in.l.google.com (mail server (MX 5))
;    142.251.127.26                          PTR lcfrai-in-f26.1e100.net (confirmed)
;    2a00:1450:4001:c21::1b                  PTR lcfrai-in-f27.1e100.net (confirmed)
;  alt3.gmail-smtp-in.l.google.com (mail server (MX 30))
;    192.179.20.27                           PTR ncboms-in-f27.1e100.net (confirmed)
;    2404:6800:4000:1027::1b                 PTR ncboms-in-f27.1e100.net (confirmed)
;  imap.gmail.com (IMAP over TLS (_imaps._tcp.gmail.com))
;    64.233.167.108                          PTR wl-in-f108.1e100.net (confirmed)
;    64.233.167.109                          PTR wl-in-f109.1e100.net (confirmed)
;    2a00:1450:400c:c02::6c                  PTR wn-in-x6c.1e100.net, wn-in-f108.1e100.net (confirmed)
;    2a00:1450:400c:c02::6d                  PTR wn-in-x6d.1e100.net, wn-in-f109.1e100.net (confirmed)
;  pop.gmail.com (POP3 over TLS (_pop3s._tcp.gmail.com))
;    142.251.127.108                         PTR lcfrai-in-f108.1e100.net (confirmed)
;    142.251.127.109                         PTR lcfrai-in-f109.1e100.net (confirmed)
;    2a00:1450:4001:c21::6c                  PTR lcfrai-in-f108.1e100.net (confirmed)
;    2a00:1450:4001:c21::6d                  PTR lcfrai-in-f109.1e100.net (confirmed)
;  smtp.gmail.com (Mail submission (_submission._tcp.gmail.com))
;    142.251.127.108                         PTR lcfrai-in-f108.1e100.net (confirmed)
;    2a00:1450:4001:c21::6c                  PTR lcfrai-in-f108.1e100.net (confirmed)
;  calendar.google.com (CalDAV (_caldav._tcp.gmail.com); CalDAV over TLS (_caldavs._tcp.gmail.com))
;    142.251.110.101                         PTR bz-in-f101.1e100.net (confirmed)
;    142.251.110.139                         PTR bz-in-f139.1e100.net (confirmed)
;    142.251.110.138                         PTR bz-in-f138.1e100.net (confirmed)
;    142.251.110.100                         PTR bz-in-f100.1e100.net (confirmed)
;    142.251.110.113                         PTR bz-in-f113.1e100.net (confirmed)
;    142.251.110.102                         PTR bz-in-f102.1e100.net (confirmed)
;    2a00:1450:4001:c21::8a                  PTR lcfrai-in-f138.1e100.net (confirmed)
;    2a00:1450:4001:c21::65                  PTR lcfrai-in-f101.1e100.net (confirmed)
;    2a00:1450:4001:c21::71                  PTR lcfrai-in-f113.1e100.net (confirmed)
;    2a00:1450:4001:c21::66                  PTR lcfrai-in-f102.1e100.net (confirmed)

;; PUBLIC RESOLVERS
;  Cloudflare A     142.251.20.17, 142.251.20.18, 142.251.20.19, 142.251.20.83  ttl 279
;  Cloudflare AAAA  2a00:1450:4001:c13::11, 2a00:1450:4001:c13::12, 2a00:1450:4001:c13::13, 2a00:1450:4001:c13::53  ttl 300  DIFFERS
;  Cloudflare MX    10 alt1.gmail-smtp-in.l.google.com., 20 alt2.gmail-smtp-in.l.google.com., 30 alt3.gmail-smtp-in.l.google.com., 40 alt4.gmail-smtp-in.l.google.com., 5 gmail-smtp-in.l.google.com.  ttl 1463
;  Google     A     142.251.14.17, 142.251.14.18, 142.251.14.19, 142.251.14.83  ttl 300  DIFFERS
;  Google     AAAA  2a00:1450:4001:c15::11, 2a00:1450:4001:c15::12, 2a00:1450:4001:c15::13, 2a00:1450:4001:c15::53  ttl 300  DIFFERS
;  Google     MX    10 alt1.gmail-smtp-in.l.google.com., 20 alt2.gmail-smtp-in.l.google.com., 30 alt3.gmail-smtp-in.l.google.com., 40 alt4.gmail-smtp-in.l.google.com., 5 gmail-smtp-in.l.google.com.  ttl 826
;  Quad9      A     74.125.128.17, 74.125.128.18, 74.125.128.19, 74.125.128.83  ttl 268  DIFFERS
;  Quad9      AAAA  2a00:1450:4013:c02::11, 2a00:1450:4013:c02::12, 2a00:1450:4013:c02::13, 2a00:1450:4013:c02::53  ttl 47  DIFFERS
;  Quad9      MX    10 alt1.gmail-smtp-in.l.google.com., 20 alt2.gmail-smtp-in.l.google.com., 30 alt3.gmail-smtp-in.l.google.com., 40 alt4.gmail-smtp-in.l.google.com., 5 gmail-smtp-in.l.google.com.  ttl 40
;  OpenDNS    A     142.251.14.17, 142.251.14.18, 142.251.14.19, 142.251.14.83  ttl 300  DIFFERS
;  OpenDNS    AAAA  2a00:1450:4001:c15::11, 2a00:1450:4001:c15::12, 2a00:1450:4001:c15::13, 2a00:1450:4001:c15::53  ttl 300  DIFFERS
;  OpenDNS    MX    10 alt1.gmail-smtp-in.l.google.com., 20 alt2.gmail-smtp-in.l.google.com., 30 alt3.gmail-smtp-in.l.google.com., 40 alt4.gmail-smtp-in.l.google.com., 5 gmail-smtp-in.l.google.com.  ttl 2139