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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.

173.245.59.191

191.59.245.173.in-addr.arpa

Zone 59.245.173.in-addr.arpa104 queries in 0.4 s2026-11-09 05:40:47 UTCNot DNSSEC-signed

WHOIS for 173.245.59.191 →TextJSON
  • Note 59.245.173.in-addr.arpa isn't signed with DNSSEC, so resolvers can't tell forged answers from real ones.

Records

Asked directly of connie.ns.cloudflare.com (108.162.192.247), an authoritative server: no cache in between, so these are the live values.

PTR Reverse pointer

1800PTRkevin.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 h.root-servers.net 198.97.190.536.2 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

    202.12.27.33 failed: NOERROR

  2. in-addr.arpa.asked f.in-addr-servers.arpa 193.0.9.111 ms

    Referral to 173.in-addr.arpa. signed (1 DS)

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

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

    199.180.182.53 failed: NOERROR

  3. 173.in-addr.arpa.asked arin.authdns.ripe.net 193.0.9.1011 ms

    Referral to 59.245.173.in-addr.arpa. unsigned delegation

    • rick.ns.cloudflare.com 108.162.193.139 172.64.33.139 173.245.59.139 2606:4700:58::adf5:3b8b 2803:f800:50::6ca2:c18b 2a06:98c1:50::ac40:218b
    • connie.ns.cloudflare.com 108.162.192.247 172.64.32.247 173.245.58.247 2606:4700:50::adf5:3af7 2803:f800:50::6ca2:c0f7 2a06:98c1:50::ac40:20f7

    No glue for rick.ns.cloudflare.com, connie.ns.cloudflare.com: addresses looked up via a resolver.

  4. 59.245.173.in-addr.arpa.asked rick.ns.cloudflare.com 173.245.59.1397.4 ms

    Answer (authoritative):

    191.59.245.173.in-addr.arpa.1800PTRkevin.ns.cloudflare.com.

Nameservers

Every address of every nameserver, asked for 59.245.173.in-addr.arpa's SOA. "Parent" means the 173.in-addr.arpa zone delegates to it; "zone" means 59.245.173.in-addr.arpa lists it itself.

NameserverListed inAddressStatusSerialTime
connie.ns.cloudflare.comparent + zone108.162.192.247 glueauthoritative20367659666.7 ms
172.64.32.247 glueauthoritative20367659667.0 ms
173.245.58.247 glueauthoritative20367659667.1 ms
2606:4700:50::adf5:3af7 glueauthoritative20367659666.5 ms
2803:f800:50::6ca2:c0f7 glueauthoritative20367659667.3 ms
2a06:98c1:50::ac40:20f7 glueauthoritative20367659667.0 ms
rick.ns.cloudflare.comparent + zone108.162.193.139 glueauthoritative20367659667.2 ms
172.64.33.139 glueauthoritative20367659667.3 ms
173.245.59.139 glueauthoritative20367659667.3 ms
2606:4700:58::adf5:3b8b glueauthoritative20367659666.6 ms
2803:f800:50::6ca2:c18b glueauthoritative20367659666.6 ms
2a06:98c1:50::ac40:218b glueauthoritative20367659666.6 ms

DNSSEC

59.245.173.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)
connie.ns.cloudflare.com
nameserver
108.162.192.247connie.ns.cloudflare.com ✓
172.64.32.247connie.ns.cloudflare.com ✓
173.245.58.247connie.ns.cloudflare.com ✓
2606:4700:50::adf5:3af7connie.ns.cloudflare.com ✓
2803:f800:50::6ca2:c0f7connie.ns.cloudflare.com ✓
2a06:98c1:50::ac40:20f7connie.ns.cloudflare.com ✓
rick.ns.cloudflare.com
nameserver
108.162.193.139rick.ns.cloudflare.com ✓
172.64.33.139rick.ns.cloudflare.com ✓
173.245.59.139rick.ns.cloudflare.com ✓
2606:4700:58::adf5:3b8brick.ns.cloudflare.com ✓
2803:f800:50::6ca2:c18brick.ns.cloudflare.com ✓
2a06:98c1:50::ac40:218brick.ns.cloudflare.com ✓
kevin.ns.cloudflare.com
PTR target
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 ✓

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 1.1.1.1kevin.ns.cloudflare.com.
TTL 1800
Google 8.8.8.8kevin.ns.cloudflare.com.
TTL 969
Quad9 9.9.9.9kevin.ns.cloudflare.com.
TTL 1800
OpenDNS 208.67.222.222kevin.ns.cloudflare.com.
TTL 1800

Text dump

; DNS report for 191.59.245.173.in-addr.arpa (173.245.59.191)
; 2026-11-09 05:40:47 UTC, 104 queries in 0.45 s, zone 59.245.173.in-addr.arpa

;; FINDINGS
;  [INFO] 59.245.173.in-addr.arpa isn't signed with DNSSEC, so resolvers can't tell forged answers from real ones.

;; RECORDS (authoritative, from connie.ns.cloudflare.com (108.162.192.247))
191.59.245.173.in-addr.arpa.	1800	IN	PTR	kevin.ns.cloudflare.com.

;; TRACE
;  191.59.245.173.in-addr.arpa PTR
;  . @h.root-servers.net (198.97.190.53) 6.2 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. @f.in-addr-servers.arpa (193.0.9.1) 11 ms [NOERROR qr]: referral to 173.in-addr.arpa.
173.in-addr.arpa.		NS	x.arin.net.	; 199.180.180.63 2001:500:f0::63
173.in-addr.arpa.		NS	r.arin.net.	; 199.180.180.63 2001:500:f0::63
173.in-addr.arpa.		NS	z.arin.net.	; 199.180.180.63 2001:500:f0::63
173.in-addr.arpa.		NS	arin.authdns.ripe.net.	; 193.0.9.10 2a13:27c0:30::10
173.in-addr.arpa.		NS	u.arin.net.	; 204.61.216.50 2001:500:14:6050:ad::1
173.in-addr.arpa.		NS	y.arin.net.	; 192.82.134.30 2001:500:127::30
173.in-addr.arpa.	86400	IN	DS	2062 8 2 494896D79DBED5BC05527F0A6C435DA6F331910CABF6F9E15C167350B47D22B8
;  173.in-addr.arpa. @arin.authdns.ripe.net (193.0.9.10) 11 ms [NOERROR qr]: referral to 59.245.173.in-addr.arpa.
59.245.173.in-addr.arpa.		NS	rick.ns.cloudflare.com.	; 108.162.193.139 172.64.33.139 173.245.59.139 2606:4700:58::adf5:3b8b 2803:f800:50::6ca2:c18b 2a06:98c1:50::ac40:218b
59.245.173.in-addr.arpa.		NS	connie.ns.cloudflare.com.	; 108.162.192.247 172.64.32.247 173.245.58.247 2606:4700:50::adf5:3af7 2803:f800:50::6ca2:c0f7 2a06:98c1:50::ac40:20f7
;  59.245.173.in-addr.arpa. @rick.ns.cloudflare.com (173.245.59.139) 7.4 ms [NOERROR qr aa]: answer
191.59.245.173.in-addr.arpa.	1800	IN	PTR	kevin.ns.cloudflare.com.

;; NAMESERVERS (SOA asked of each address)
;  connie.ns.cloudflare.com [parent+zone]
;    108.162.192.247                         ok                        2036765966  6.7 ms
;    172.64.32.247                           ok                        2036765966  7.0 ms
;    173.245.58.247                          ok                        2036765966  7.1 ms
;    2606:4700:50::adf5:3af7                 ok                        2036765966  6.5 ms
;    2803:f800:50::6ca2:c0f7                 ok                        2036765966  7.3 ms
;    2a06:98c1:50::ac40:20f7                 ok                        2036765966  7.0 ms
;  rick.ns.cloudflare.com [parent+zone]
;    108.162.193.139                         ok                        2036765966  7.2 ms
;    172.64.33.139                           ok                        2036765966  7.3 ms
;    173.245.59.139                          ok                        2036765966  7.3 ms
;    2606:4700:58::adf5:3b8b                 ok                        2036765966  6.6 ms
;    2803:f800:50::6ca2:c18b                 ok                        2036765966  6.6 ms
;    2a06:98c1:50::ac40:218b                 ok                        2036765966  6.6 ms

;; DNSSEC: unsigned

;; HOSTS
;  connie.ns.cloudflare.com (nameserver)
;    108.162.192.247                         PTR connie.ns.cloudflare.com (confirmed)
;    172.64.32.247                           PTR connie.ns.cloudflare.com (confirmed)
;    173.245.58.247                          PTR connie.ns.cloudflare.com (confirmed)
;    2606:4700:50::adf5:3af7                 PTR connie.ns.cloudflare.com (confirmed)
;    2803:f800:50::6ca2:c0f7                 PTR connie.ns.cloudflare.com (confirmed)
;    2a06:98c1:50::ac40:20f7                 PTR connie.ns.cloudflare.com (confirmed)
;  rick.ns.cloudflare.com (nameserver)
;    108.162.193.139                         PTR rick.ns.cloudflare.com (confirmed)
;    172.64.33.139                           PTR rick.ns.cloudflare.com (confirmed)
;    173.245.59.139                          PTR rick.ns.cloudflare.com (confirmed)
;    2606:4700:58::adf5:3b8b                 PTR rick.ns.cloudflare.com (confirmed)
;    2803:f800:50::6ca2:c18b                 PTR rick.ns.cloudflare.com (confirmed)
;    2a06:98c1:50::ac40:218b                 PTR rick.ns.cloudflare.com (confirmed)
;  kevin.ns.cloudflare.com (PTR target)
;    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)

;; PUBLIC RESOLVERS
;  Cloudflare PTR   kevin.ns.cloudflare.com.  ttl 1800
;  Google     PTR   kevin.ns.cloudflare.com.  ttl 969
;  Quad9      PTR   kevin.ns.cloudflare.com.  ttl 1800
;  OpenDNS    PTR   kevin.ns.cloudflare.com.  ttl 1800