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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.

108.162.193.240

240.193.162.108.in-addr.arpa

Zone 193.162.108.in-addr.arpa104 queries in 1.1 s2026-11-09 05:40:47 UTCNot DNSSEC-signed

WHOIS for 108.162.193.240 →TextJSON
  • Note 193.162.108.in-addr.arpa isn't signed with DNSSEC, so resolvers can't tell forged answers from real ones.

Records

Asked directly of kevin.ns.cloudflare.com (173.245.59.191), an authoritative server: no cache in between, so these are the live values.

PTR Reverse pointer

1800PTRtony.ns.cloudflare.com.
ANY query: refused politely (RFC 8482)
3600HINFO"RFC8482" ""

No records of type A, AAAA, CNAME, DNAME, NS, SOA, MX, TXT, CAA, HTTPS, SVCB, SRV, NAPTR, DS, DNSKEY, CDS, CDNSKEY, NSEC3PARAM, TLSA, SSHFP, LOC, HINFO, RP, URI, SPF, OPENPGPKEY, ZONEMD, CSYNC.

Resolution trace

  1. .asked l.root-servers.net 199.7.83.429.2 ms

    Referral to in-addr.arpa. signed (4 DS)

    • a.in-addr-servers.arpa 199.180.182.53 2620:37:e000::53
    • b.in-addr-servers.arpa 199.253.183.183 2001:500:87::87
    • c.in-addr-servers.arpa 196.216.169.10 2001:43f8:110::10
    • d.in-addr-servers.arpa 200.10.60.53 2001:13c7:7010::53
    • e.in-addr-servers.arpa 203.119.86.101 2001:dd8:6::101
    • f.in-addr-servers.arpa 193.0.9.1 2a13:27c0:30::1

    192.33.4.12 failed: NOERROR

  2. in-addr.arpa.asked b.in-addr-servers.arpa 199.253.183.1835.8 ms

    Referral to 108.in-addr.arpa. signed (1 DS)

    • r.arin.net 199.180.180.63 2001:500:f0::63
    • u.arin.net 204.61.216.50 2001:500:14:6050:ad::1
    • x.arin.net 199.180.180.63 2001:500:f0::63
    • y.arin.net 192.82.134.30 2001:500:127::30
    • z.arin.net 199.180.180.63 2001:500:f0::63
    • arin.authdns.ripe.net 193.0.9.10 2a13:27c0:30::10

    No glue for r.arin.net, u.arin.net, x.arin.net, y.arin.net, z.arin.net, arin.authdns.ripe.net: addresses looked up via a resolver.

  3. 108.in-addr.arpa.asked u.arin.net 204.61.216.505.8 ms

    Referral to 193.162.108.in-addr.arpa. unsigned delegation

    • cruz.ns.cloudflare.com 108.162.192.88 172.64.32.88 173.245.58.88 2606:4700:50::adf5:3a58 2803:f800:50::6ca2:c058 2a06:98c1:50::ac40:2058
    • kevin.ns.cloudflare.com 108.162.193.191 172.64.33.191 173.245.59.191 2606:4700:58::adf5:3bbf 2803:f800:50::6ca2:c1bf 2a06:98c1:50::ac40:21bf

    No glue for cruz.ns.cloudflare.com, kevin.ns.cloudflare.com: addresses looked up via a resolver.

    199.180.180.63 failed: NOERROR

  4. 193.162.108.in-addr.arpa.asked cruz.ns.cloudflare.com 173.245.58.886.8 ms

    Answer (authoritative):

    240.193.162.108.in-addr.arpa.1800PTRtony.ns.cloudflare.com.

Nameservers

Every address of every nameserver, asked for 193.162.108.in-addr.arpa's SOA. "Parent" means the 108.in-addr.arpa zone delegates to it; "zone" means 193.162.108.in-addr.arpa lists it itself.

NameserverListed inAddressStatusSerialTime
cruz.ns.cloudflare.comparent + zone108.162.192.88 glueauthoritative23544077906.7 ms
172.64.32.88 glueauthoritative23544077906.9 ms
173.245.58.88 glueauthoritative23544077907.0 ms
2606:4700:50::adf5:3a58 glueauthoritative23544077906.7 ms
2803:f800:50::6ca2:c058 glueauthoritative23544077906.8 ms
2a06:98c1:50::ac40:2058 glueauthoritative23544077906.5 ms
kevin.ns.cloudflare.comparent + zone108.162.193.191 glueauthoritative23544077907.1 ms
172.64.33.191 glueauthoritative23544077907.0 ms
173.245.59.191 glueauthoritative23544077906.6 ms
2606:4700:58::adf5:3bbf glueauthoritative23544077906.9 ms
2803:f800:50::6ca2:c1bf glueauthoritative23544077906.8 ms
2a06:98c1:50::ac40:21bf glueauthoritative23544077907.6 ms

DNSSEC

193.162.108.in-addr.arpa isn't signed: no DS at the parent and no DNSKEY in the zone.

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)
cruz.ns.cloudflare.com
nameserver
108.162.192.88cruz.ns.cloudflare.com ✓
172.64.32.88cruz.ns.cloudflare.com ✓
173.245.58.88cruz.ns.cloudflare.com ✓
2606:4700:50::adf5:3a58cruz.ns.cloudflare.com ✓
2803:f800:50::6ca2:c058cruz.ns.cloudflare.com ✓
2a06:98c1:50::ac40:2058cruz.ns.cloudflare.com ✓
kevin.ns.cloudflare.com
nameserver
108.162.193.191kevin.ns.cloudflare.com ✓
172.64.33.191kevin.ns.cloudflare.com ✓
173.245.59.191kevin.ns.cloudflare.com ✓
2606:4700:58::adf5:3bbfkevin.ns.cloudflare.com ✓
2803:f800:50::6ca2:c1bfkevin.ns.cloudflare.com ✓
2a06:98c1:50::ac40:21bfkevin.ns.cloudflare.com ✓
tony.ns.cloudflare.com
PTR target
108.162.193.240tony.ns.cloudflare.com ✓
172.64.33.240tony.ns.cloudflare.com ✓
173.245.59.240tony.ns.cloudflare.com ✓
2606:4700:58::adf5:3bf0tony.ns.cloudflare.com ✓
2803:f800:50::6ca2:c1f0tony.ns.cloudflare.com ✓
2a06:98c1:50::ac40:21f0tony.ns.cloudflare.com ✓

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.

ResolverPTR
Cloudflare 1.1.1.1tony.ns.cloudflare.com.
TTL 1800
Google 8.8.8.8tony.ns.cloudflare.com.
TTL 1800
Quad9 9.9.9.9tony.ns.cloudflare.com.
TTL 1800
OpenDNS 208.67.222.222tony.ns.cloudflare.com.
TTL 848

Text dump

; DNS report for 240.193.162.108.in-addr.arpa (108.162.193.240)
; 2026-11-09 05:40:47 UTC, 104 queries in 1.08 s, zone 193.162.108.in-addr.arpa

;; FINDINGS
;  [INFO] 193.162.108.in-addr.arpa isn't signed with DNSSEC, so resolvers can't tell forged answers from real ones.

;; RECORDS (authoritative, from kevin.ns.cloudflare.com (173.245.59.191))
240.193.162.108.in-addr.arpa.	1800	IN	PTR	tony.ns.cloudflare.com.

;; TRACE
;  240.193.162.108.in-addr.arpa PTR
;  . @l.root-servers.net (199.7.83.42) 9.2 ms [NOERROR qr]: referral to in-addr.arpa.
in-addr.arpa.		NS	a.in-addr-servers.arpa.	; 199.180.182.53 2620:37:e000::53
in-addr.arpa.		NS	b.in-addr-servers.arpa.	; 199.253.183.183 2001:500:87::87
in-addr.arpa.		NS	c.in-addr-servers.arpa.	; 196.216.169.10 2001:43f8:110::10
in-addr.arpa.		NS	d.in-addr-servers.arpa.	; 200.10.60.53 2001:13c7:7010::53
in-addr.arpa.		NS	e.in-addr-servers.arpa.	; 203.119.86.101 2001:dd8:6::101
in-addr.arpa.		NS	f.in-addr-servers.arpa.	; 193.0.9.1 2a13:27c0:30::1
in-addr.arpa.	86400	IN	DS	47054 8 2 5CAFCCEC201D1933B4C9F6A9C8F51E51F3B39979058AC21B8DF1B1F281CBC6F2
in-addr.arpa.	86400	IN	DS	53696 8 2 13E5501C56B20394DA921B51412D48B7089C5EB6957A7C58553C4D4D424F04DF
in-addr.arpa.	86400	IN	DS	54956 8 2 E0E2BF5CFBD66572CA05EC18267D91509BA6A9405AF05C3FD4141DFA45200C08
in-addr.arpa.	86400	IN	DS	63982 8 2 AAF4FB5D213EF25AE44679032EBE3514C487D7ABD99D7F5FEC3383D030733C73
;  in-addr.arpa. @b.in-addr-servers.arpa (199.253.183.183) 5.8 ms [NOERROR qr]: referral to 108.in-addr.arpa.
108.in-addr.arpa.		NS	r.arin.net.	; 199.180.180.63 2001:500:f0::63
108.in-addr.arpa.		NS	u.arin.net.	; 204.61.216.50 2001:500:14:6050:ad::1
108.in-addr.arpa.		NS	x.arin.net.	; 199.180.180.63 2001:500:f0::63
108.in-addr.arpa.		NS	y.arin.net.	; 192.82.134.30 2001:500:127::30
108.in-addr.arpa.		NS	z.arin.net.	; 199.180.180.63 2001:500:f0::63
108.in-addr.arpa.		NS	arin.authdns.ripe.net.	; 193.0.9.10 2a13:27c0:30::10
108.in-addr.arpa.	86400	IN	DS	8527 8 2 D93BF3BE3B06684C30DD9256652DB97027FD3BE512E16FC4C153572312742854
;  108.in-addr.arpa. @u.arin.net (204.61.216.50) 5.8 ms [NOERROR qr]: referral to 193.162.108.in-addr.arpa.
193.162.108.in-addr.arpa.		NS	cruz.ns.cloudflare.com.	; 108.162.192.88 172.64.32.88 173.245.58.88 2606:4700:50::adf5:3a58 2803:f800:50::6ca2:c058 2a06:98c1:50::ac40:2058
193.162.108.in-addr.arpa.		NS	kevin.ns.cloudflare.com.	; 108.162.193.191 172.64.33.191 173.245.59.191 2606:4700:58::adf5:3bbf 2803:f800:50::6ca2:c1bf 2a06:98c1:50::ac40:21bf
;  193.162.108.in-addr.arpa. @cruz.ns.cloudflare.com (173.245.58.88) 6.8 ms [NOERROR qr aa]: answer
240.193.162.108.in-addr.arpa.	1800	IN	PTR	tony.ns.cloudflare.com.

;; NAMESERVERS (SOA asked of each address)
;  cruz.ns.cloudflare.com [parent+zone]
;    108.162.192.88                          ok                        2354407790  6.7 ms
;    172.64.32.88                            ok                        2354407790  6.9 ms
;    173.245.58.88                           ok                        2354407790  7.0 ms
;    2606:4700:50::adf5:3a58                 ok                        2354407790  6.7 ms
;    2803:f800:50::6ca2:c058                 ok                        2354407790  6.8 ms
;    2a06:98c1:50::ac40:2058                 ok                        2354407790  6.5 ms
;  kevin.ns.cloudflare.com [parent+zone]
;    108.162.193.191                         ok                        2354407790  7.1 ms
;    172.64.33.191                           ok                        2354407790  7.0 ms
;    173.245.59.191                          ok                        2354407790  6.6 ms
;    2606:4700:58::adf5:3bbf                 ok                        2354407790  6.9 ms
;    2803:f800:50::6ca2:c1bf                 ok                        2354407790  6.8 ms
;    2a06:98c1:50::ac40:21bf                 ok                        2354407790  7.6 ms

;; DNSSEC: unsigned

;; HOSTS
;  cruz.ns.cloudflare.com (nameserver)
;    108.162.192.88                          PTR cruz.ns.cloudflare.com (confirmed)
;    172.64.32.88                            PTR cruz.ns.cloudflare.com (confirmed)
;    173.245.58.88                           PTR cruz.ns.cloudflare.com (confirmed)
;    2606:4700:50::adf5:3a58                 PTR cruz.ns.cloudflare.com (confirmed)
;    2803:f800:50::6ca2:c058                 PTR cruz.ns.cloudflare.com (confirmed)
;    2a06:98c1:50::ac40:2058                 PTR cruz.ns.cloudflare.com (confirmed)
;  kevin.ns.cloudflare.com (nameserver)
;    108.162.193.191                         PTR kevin.ns.cloudflare.com (confirmed)
;    172.64.33.191                           PTR kevin.ns.cloudflare.com (confirmed)
;    173.245.59.191                          PTR kevin.ns.cloudflare.com (confirmed)
;    2606:4700:58::adf5:3bbf                 PTR kevin.ns.cloudflare.com (confirmed)
;    2803:f800:50::6ca2:c1bf                 PTR kevin.ns.cloudflare.com (confirmed)
;    2a06:98c1:50::ac40:21bf                 PTR kevin.ns.cloudflare.com (confirmed)
;  tony.ns.cloudflare.com (PTR target)
;    108.162.193.240                         PTR tony.ns.cloudflare.com (confirmed)
;    172.64.33.240                           PTR tony.ns.cloudflare.com (confirmed)
;    173.245.59.240                          PTR tony.ns.cloudflare.com (confirmed)
;    2606:4700:58::adf5:3bf0                 PTR tony.ns.cloudflare.com (confirmed)
;    2803:f800:50::6ca2:c1f0                 PTR tony.ns.cloudflare.com (confirmed)
;    2a06:98c1:50::ac40:21f0                 PTR tony.ns.cloudflare.com (confirmed)

;; PUBLIC RESOLVERS
;  Cloudflare PTR   tony.ns.cloudflare.com.  ttl 1800
;  Google     PTR   tony.ns.cloudflare.com.  ttl 1800
;  Quad9      PTR   tony.ns.cloudflare.com.  ttl 1800
;  OpenDNS    PTR   tony.ns.cloudflare.com.  ttl 848