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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.

45.54.17.193

193.17.54.45.in-addr.arpa

Zone 17.54.45.in-addr.arpa150 queries in 1.2 s2026-11-09 06:11:27 UTCNot DNSSEC-signed

WHOIS for 45.54.17.193 →TextJSON
  • Warning The parent zone delegates to dns1.p01.nsone.net, dns2.p01.nsone.net, dns3.p01.nsone.net, dns4.p01.nsone.net but 17.54.45.in-addr.arpa itself lists dns1.p08.nsone.net, dns2.p08.nsone.net, dns3.p08.nsone.net, dns4.p08.nsone.net, ns01.adjust.works, ns02.adjust.works, ns03.adjust.works, ns04.adjust.works. Make the two lists match.
  • Note 17.54.45.in-addr.arpa isn't signed with DNSSEC, so resolvers can't tell forged answers from real ones.

Records

Asked directly of dns4.p08.nsone.net (198.51.45.72), an authoritative server: no cache in between, so these are the live values.

PTR Reverse pointer

3600PTRns04.adjust.works.
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 e.root-servers.net 192.203.230.105.5 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
  2. in-addr.arpa.asked c.in-addr-servers.arpa 196.216.169.10169 ms

    Referral to 45.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.

    203.119.86.101 failed: NOERROR

  3. 45.in-addr.arpa.asked arin.authdns.ripe.net 193.0.9.1012 ms

    Referral to 17.54.45.in-addr.arpa. unsigned delegation

    • dns1.p01.nsone.net 198.51.44.1 2620:4d:4000:6259:7:1:0:1
    • dns2.p01.nsone.net 198.51.45.1 2a00:edc0:6259:7:1::2
    • dns3.p01.nsone.net 198.51.44.65 2620:4d:4000:6259:7:1:0:3
    • dns4.p01.nsone.net 198.51.45.65 2a00:edc0:6259:7:1::4

    No glue for dns1.p01.nsone.net, dns2.p01.nsone.net, dns3.p01.nsone.net, dns4.p01.nsone.net: addresses looked up via a resolver.

  4. 17.54.45.in-addr.arpa.asked dns4.p01.nsone.net 198.51.45.655.9 ms

    Answer (authoritative):

    193.17.54.45.in-addr.arpa.3600PTRns04.adjust.works.

Nameservers

Every address of every nameserver, asked for 17.54.45.in-addr.arpa's SOA. "Parent" means the 45.in-addr.arpa zone delegates to it; "zone" means 17.54.45.in-addr.arpa lists it itself.

NameserverListed inAddressStatusSerialTime
dns1.p01.nsone.netparent198.51.44.1 glueauthoritative150366049514 ms
2620:4d:4000:6259:7:1:0:1 glueauthoritative150366049515 ms
dns1.p08.nsone.netzone198.51.44.8authoritative150366049515 ms
2620:4d:4000:6259:7:8:0:1authoritative150366049513 ms
dns2.p01.nsone.netparent198.51.45.1 glueauthoritative15036604956.0 ms
2a00:edc0:6259:7:1::2 glueauthoritative150366049513 ms
dns2.p08.nsone.netzone198.51.45.8authoritative15036604956.0 ms
2a00:edc0:6259:7:8::2authoritative150366049513 ms
dns3.p01.nsone.netparent198.51.44.65 glueauthoritative150366049513 ms
2620:4d:4000:6259:7:1:0:3 glueauthoritative150366049515 ms
dns3.p08.nsone.netzone198.51.44.72authoritative150366049513 ms
2620:4d:4000:6259:7:8:0:3authoritative150366049514 ms
dns4.p01.nsone.netparent198.51.45.65 glueauthoritative15036604955.7 ms
2a00:edc0:6259:7:1::4 glueauthoritative150366049513 ms
dns4.p08.nsone.netzone198.51.45.72authoritative15036604955.6 ms
2a00:edc0:6259:7:8::4authoritative150366049512 ms
ns01.adjust.workszone45.54.17.1authoritative150366049516 ms
2607:f740:e621::1authoritative150366049516 ms
ns02.adjust.workszone45.54.17.65authoritative150366049517 ms
2607:f740:e621:4000::1authoritative150366049517 ms
ns03.adjust.workszone45.54.17.129authoritative150366049516 ms
ns04.adjust.workszone45.54.17.193authoritative150366049516 ms

DNSSEC

17.54.45.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)
dns1.p01.nsone.net
nameserver
198.51.44.1dns1.p01.nsone.net ✓
2620:4d:4000:6259:7:1:0:1dns1.p01.nsone.net ✓
dns1.p08.nsone.net
nameserver
198.51.44.8ns8.demysdns.com, dns1.p08.nsone.net ✓
2620:4d:4000:6259:7:8:0:1dns1.p08.nsone.net, ns8.demysdns.com ✓
dns2.p01.nsone.net
nameserver
198.51.45.1dns2.p01.nsone.net ✓
2a00:edc0:6259:7:1::2dns2.p01.nsone.net ✓
dns2.p08.nsone.net
nameserver
198.51.45.8dns2.p08.nsone.net ✓
2a00:edc0:6259:7:8::2dns2.p08.nsone.net ✓
dns3.p01.nsone.net
nameserver
198.51.44.65dns3.p01.nsone.net ✓
2620:4d:4000:6259:7:1:0:3dns3.p01.nsone.net ✓
dns3.p08.nsone.net
nameserver
198.51.44.72dns3.p08.nsone.net ✓
2620:4d:4000:6259:7:8:0:3dns3.p08.nsone.net ✓
dns4.p01.nsone.net
nameserver
198.51.45.65dns4.p01.nsone.net ✓
2a00:edc0:6259:7:1::4dns4.p01.nsone.net ✓
dns4.p08.nsone.net
nameserver
198.51.45.72dns4.p08.nsone.net ✓
2a00:edc0:6259:7:8::4dns4.p08.nsone.net ✓
ns01.adjust.works
nameserver
45.54.17.1ns01.adjust.works ✓
2607:f740:e621::1none
ns02.adjust.works
nameserver
45.54.17.65ns02.adjust.works ✓
2607:f740:e621:4000::1none
ns03.adjust.works
nameserver
45.54.17.129ns03.adjust.works ✓
ns04.adjust.works
nameserver · PTR target
45.54.17.193ns04.adjust.works ✓

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 1.1.1.1ns04.adjust.works.
TTL 3600
Google 8.8.8.8ns04.adjust.works.
TTL 3600
Quad9 9.9.9.9ns04.adjust.works.
TTL 3600
OpenDNS 208.67.222.222ns04.adjust.works.
TTL 3600

Text dump

; DNS report for 193.17.54.45.in-addr.arpa (45.54.17.193)
; 2026-11-09 06:11:27 UTC, 150 queries in 1.19 s, zone 17.54.45.in-addr.arpa

;; FINDINGS
;  [WARN] The parent zone delegates to dns1.p01.nsone.net, dns2.p01.nsone.net, dns3.p01.nsone.net, dns4.p01.nsone.net but 17.54.45.in-addr.arpa itself lists dns1.p08.nsone.net, dns2.p08.nsone.net, dns3.p08.nsone.net, dns4.p08.nsone.net, ns01.adjust.works, ns02.adjust.works, ns03.adjust.works, ns04.adjust.works. Make the two lists match.
;  [INFO] 17.54.45.in-addr.arpa isn't signed with DNSSEC, so resolvers can't tell forged answers from real ones.

;; RECORDS (authoritative, from dns4.p08.nsone.net (198.51.45.72))
193.17.54.45.in-addr.arpa.	3600	IN	PTR	ns04.adjust.works.

;; TRACE
;  193.17.54.45.in-addr.arpa PTR
;  . @e.root-servers.net (192.203.230.10) 5.5 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. @c.in-addr-servers.arpa (196.216.169.10) 169 ms [NOERROR qr]: referral to 45.in-addr.arpa.
45.in-addr.arpa.		NS	r.arin.net.	; 199.180.180.63 2001:500:f0::63
45.in-addr.arpa.		NS	u.arin.net.	; 204.61.216.50 2001:500:14:6050:ad::1
45.in-addr.arpa.		NS	x.arin.net.	; 199.180.180.63 2001:500:f0::63
45.in-addr.arpa.		NS	y.arin.net.	; 192.82.134.30 2001:500:127::30
45.in-addr.arpa.		NS	z.arin.net.	; 199.180.180.63 2001:500:f0::63
45.in-addr.arpa.		NS	arin.authdns.ripe.net.	; 193.0.9.10 2a13:27c0:30::10
45.in-addr.arpa.	86400	IN	DS	9136 8 2 97414863B7A0FDE713FB174990E9B43DE47467707010C01380743425EE6D146B
;  45.in-addr.arpa. @arin.authdns.ripe.net (193.0.9.10) 12 ms [NOERROR qr]: referral to 17.54.45.in-addr.arpa.
17.54.45.in-addr.arpa.		NS	dns1.p01.nsone.net.	; 198.51.44.1 2620:4d:4000:6259:7:1:0:1
17.54.45.in-addr.arpa.		NS	dns2.p01.nsone.net.	; 198.51.45.1 2a00:edc0:6259:7:1::2
17.54.45.in-addr.arpa.		NS	dns3.p01.nsone.net.	; 198.51.44.65 2620:4d:4000:6259:7:1:0:3
17.54.45.in-addr.arpa.		NS	dns4.p01.nsone.net.	; 198.51.45.65 2a00:edc0:6259:7:1::4
;  17.54.45.in-addr.arpa. @dns4.p01.nsone.net (198.51.45.65) 5.9 ms [NOERROR qr aa]: answer
193.17.54.45.in-addr.arpa.	3600	IN	PTR	ns04.adjust.works.

;; NAMESERVERS (SOA asked of each address)
;  dns1.p01.nsone.net [parent]
;    198.51.44.1                             ok                        1503660495  14 ms
;    2620:4d:4000:6259:7:1:0:1               ok                        1503660495  15 ms
;  dns1.p08.nsone.net [zone]
;    198.51.44.8                             ok                        1503660495  15 ms
;    2620:4d:4000:6259:7:8:0:1               ok                        1503660495  13 ms
;  dns2.p01.nsone.net [parent]
;    198.51.45.1                             ok                        1503660495  6.0 ms
;    2a00:edc0:6259:7:1::2                   ok                        1503660495  13 ms
;  dns2.p08.nsone.net [zone]
;    198.51.45.8                             ok                        1503660495  6.0 ms
;    2a00:edc0:6259:7:8::2                   ok                        1503660495  13 ms
;  dns3.p01.nsone.net [parent]
;    198.51.44.65                            ok                        1503660495  13 ms
;    2620:4d:4000:6259:7:1:0:3               ok                        1503660495  15 ms
;  dns3.p08.nsone.net [zone]
;    198.51.44.72                            ok                        1503660495  13 ms
;    2620:4d:4000:6259:7:8:0:3               ok                        1503660495  14 ms
;  dns4.p01.nsone.net [parent]
;    198.51.45.65                            ok                        1503660495  5.7 ms
;    2a00:edc0:6259:7:1::4                   ok                        1503660495  13 ms
;  dns4.p08.nsone.net [zone]
;    198.51.45.72                            ok                        1503660495  5.6 ms
;    2a00:edc0:6259:7:8::4                   ok                        1503660495  12 ms
;  ns01.adjust.works [zone]
;    45.54.17.1                              ok                        1503660495  16 ms
;    2607:f740:e621::1                       ok                        1503660495  16 ms
;  ns02.adjust.works [zone]
;    45.54.17.65                             ok                        1503660495  17 ms
;    2607:f740:e621:4000::1                  ok                        1503660495  17 ms
;  ns03.adjust.works [zone]
;    45.54.17.129                            ok                        1503660495  16 ms
;  ns04.adjust.works [zone]
;    45.54.17.193                            ok                        1503660495  16 ms

;; DNSSEC: unsigned

;; HOSTS
;  dns1.p01.nsone.net (nameserver)
;    198.51.44.1                             PTR dns1.p01.nsone.net (confirmed)
;    2620:4d:4000:6259:7:1:0:1               PTR dns1.p01.nsone.net (confirmed)
;  dns1.p08.nsone.net (nameserver)
;    198.51.44.8                             PTR ns8.demysdns.com, dns1.p08.nsone.net (confirmed)
;    2620:4d:4000:6259:7:8:0:1               PTR dns1.p08.nsone.net, ns8.demysdns.com (confirmed)
;  dns2.p01.nsone.net (nameserver)
;    198.51.45.1                             PTR dns2.p01.nsone.net (confirmed)
;    2a00:edc0:6259:7:1::2                   PTR dns2.p01.nsone.net (confirmed)
;  dns2.p08.nsone.net (nameserver)
;    198.51.45.8                             PTR dns2.p08.nsone.net (confirmed)
;    2a00:edc0:6259:7:8::2                   PTR dns2.p08.nsone.net (confirmed)
;  dns3.p01.nsone.net (nameserver)
;    198.51.44.65                            PTR dns3.p01.nsone.net (confirmed)
;    2620:4d:4000:6259:7:1:0:3               PTR dns3.p01.nsone.net (confirmed)
;  dns3.p08.nsone.net (nameserver)
;    198.51.44.72                            PTR dns3.p08.nsone.net (confirmed)
;    2620:4d:4000:6259:7:8:0:3               PTR dns3.p08.nsone.net (confirmed)
;  dns4.p01.nsone.net (nameserver)
;    198.51.45.65                            PTR dns4.p01.nsone.net (confirmed)
;    2a00:edc0:6259:7:1::4                   PTR dns4.p01.nsone.net (confirmed)
;  dns4.p08.nsone.net (nameserver)
;    198.51.45.72                            PTR dns4.p08.nsone.net (confirmed)
;    2a00:edc0:6259:7:8::4                   PTR dns4.p08.nsone.net (confirmed)
;  ns01.adjust.works (nameserver)
;    45.54.17.1                              PTR ns01.adjust.works (confirmed)
;    2607:f740:e621::1                       PTR none
;  ns02.adjust.works (nameserver)
;    45.54.17.65                             PTR ns02.adjust.works (confirmed)
;    2607:f740:e621:4000::1                  PTR none
;  ns03.adjust.works (nameserver)
;    45.54.17.129                            PTR ns03.adjust.works (confirmed)
;  ns04.adjust.works (nameserver; PTR target)
;    45.54.17.193                            PTR ns04.adjust.works (confirmed)

;; PUBLIC RESOLVERS
;  Cloudflare PTR   ns04.adjust.works.  ttl 3600
;  Google     PTR   ns04.adjust.works.  ttl 3600
;  Quad9      PTR   ns04.adjust.works.  ttl 3600
;  OpenDNS    PTR   ns04.adjust.works.  ttl 3600