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.

198.51.45.68

68.45.51.198.in-addr.arpa

Zone 45.51.198.in-addr.arpa96 queries in 0.9 s2026-11-09 06:11:20 UTCDNSSEC signed

WHOIS for 198.51.45.68 →Text JSON

No problems found.

Records

Asked directly of dns2.p08.nsone.net (198.51.45.8), an authoritative server: no cache in between, so these are the live values. Each set is DNSSEC-signed.

PTR Reverse pointer

3600

PTR

dns4.p04.nsone.net.

ANY query: 1 records

NSEC

\000.68.45.51.198.in-addr.arpa. PTR RRSIG NSEC

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

.asked m.root-servers.net 202.12.27.3315 ms
Referral to in-addr.arpa. signed (4 DS)
- f.in-addr-servers.arpa 193.0.9.1 2a13:27c0:30::1
- d.in-addr-servers.arpa 200.10.60.53 2001:13c7:7010::53
- b.in-addr-servers.arpa 199.253.183.183 2001:500:87::87
- a.in-addr-servers.arpa 199.180.182.53 2620:37:e000::53
- c.in-addr-servers.arpa 196.216.169.10 2001:43f8:110::10
- e.in-addr-servers.arpa 203.119.86.101 2001:dd8:6::101
in-addr.arpa.asked d.in-addr-servers.arpa 200.10.60.53118 ms
Referral to 198.in-addr.arpa. signed (1 DS)
- x.arin.net 199.180.180.63 2001:500:f0::63
- z.arin.net 199.180.180.63 2001:500:f0::63
- r.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, z.arin.net, r.arin.net, arin.authdns.ripe.net, u.arin.net, y.arin.net: addresses looked up via a resolver.
203.119.86.101 failed: NOERROR
198.in-addr.arpa.asked r.arin.net 199.180.180.6390 ms
Referral to 45.51.198.in-addr.arpa. signed (1 DS)
- dns3.p08.nsone.net 198.51.44.72 2620:4d:4000:6259:7:8:0:3
- dns1.p08.nsone.net 198.51.44.8 2620:4d:4000:6259:7:8:0:1
- dns2.p08.nsone.net 198.51.45.8 2a00:edc0:6259:7:8::2
- dns4.p08.nsone.net 198.51.45.72 2a00:edc0:6259:7:8::4
No glue for dns3.p08.nsone.net, dns1.p08.nsone.net, dns2.p08.nsone.net, dns4.p08.nsone.net: addresses looked up via a resolver.
45.51.198.in-addr.arpa.asked dns2.p08.nsone.net 198.51.45.86.5 ms
Answer (authoritative):
68.45.51.198.in-addr.arpa. 3600 PTR dns4.p04.nsone.net.

Nameservers

Every address of every nameserver, asked for 45.51.198.in-addr.arpa's SOA. "Parent" means the 198.in-addr.arpa zone delegates to it; "zone" means 45.51.198.in-addr.arpa lists it itself.

Nameserver

Listed in

Address

Status

Serial

Time

dns1.p08.nsone.net

parent + zone

198.51.44.8 glue

authoritative

1624991982

14 ms

2620:4d:4000:6259:7:8:0:1 glue

authoritative

1624991982

14 ms

dns2.p08.nsone.net

parent + zone

198.51.45.8 glue

authoritative

1624991982

6.4 ms

2a00:edc0:6259:7:8::2 glue

authoritative

1624991982

13 ms

dns3.p08.nsone.net

parent + zone

198.51.44.72 glue

authoritative

1624991982

16 ms

2620:4d:4000:6259:7:8:0:3 glue

authoritative

1624991982

14 ms

dns4.p08.nsone.net

parent + zone

198.51.45.72 glue

authoritative

1624991982

6.4 ms

2a00:edc0:6259:7:8::4 glue

authoritative

1624991982

13 ms

DNSSEC

45.51.198.in-addr.arpa is signed, and the 198.in-addr.arpa. zone vouches for it with 1 DS record.

Validating resolvers: Cloudflare secure Google secure

DS at the parent

Key tag

Algorithm

Digest

Matches a DNSKEY

48553

13 ECDSAP256SHA256

SHA-256

yes, digest verified

DNSKEYs in the zone

Key tag

Role

Algorithm

Size

48553

KSK (signs keys)

13 ECDSAP256SHA256

256 bits

12196

ZSK (signs records)

13 ECDSAP256SHA256

256 bits

Signatures

Over

Valid from

Expires

Left

PTR

2026-11-09 05:11

2026-11-10 07:11 UTC

1 d

NSEC

2026-11-09 05:11

2026-11-10 07:11 UTC

1 d

DNSKEY

2026-11-08 16:14

2026-11-15 17:14 UTC

6.5 d

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.

Host

Address

Reverse DNS (PTR)

dns1.p08.nsone.net

nameserver

198.51.44.8

ns8.demysdns.com, dns1.p08.nsone.net ✓

2620:4d:4000:6259:7:8:0:1

dns1.p08.nsone.net, ns8.demysdns.com ✓

dns2.p08.nsone.net

nameserver

198.51.45.8

dns2.p08.nsone.net ✓

2a00:edc0:6259:7:8::2

dns2.p08.nsone.net ✓

dns3.p08.nsone.net

nameserver

198.51.44.72

dns3.p08.nsone.net ✓

2620:4d:4000:6259:7:8:0:3

dns3.p08.nsone.net ✓

dns4.p08.nsone.net

nameserver

198.51.45.72

dns4.p08.nsone.net ✓

2a00:edc0:6259:7:8::4

dns4.p08.nsone.net ✓

dns4.p04.nsone.net

PTR target

198.51.45.68

dns4.p04.nsone.net ✓

2a00:edc0:6259:7:4::4

dns4.p04.nsone.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.

Resolver

PTR

Cloudflare 1.1.1.1

dns4.p04.nsone.net.

TTL 3600 · validated

Google 8.8.8.8

dns4.p04.nsone.net.

TTL 2964 · validated

Quad9 9.9.9.9

dns4.p04.nsone.net.

TTL 3600 · validated

OpenDNS 208.67.222.222

dns4.p04.nsone.net.

TTL 51 · validated

Text dump

; DNS report for 68.45.51.198.in-addr.arpa (198.51.45.68)
; 2026-11-09 06:11:20 UTC, 96 queries in 0.88 s, zone 45.51.198.in-addr.arpa

;; FINDINGS
;  [OK] No problems found.

;; RECORDS (authoritative, from dns2.p08.nsone.net (198.51.45.8))
68.45.51.198.in-addr.arpa.	3600	IN	PTR	dns4.p04.nsone.net.
68.45.51.198.in-addr.arpa.	3600	IN	RRSIG	PTR 13 6 3600 20261110071120 20261109051120 12196 45.51.198.in-addr.arpa. vYNTueZhMi+5fJ2oaZoimvlqJAs1+8vdvq9i/lWAo7nAZBdyDbDwE9YZdv4elA37JGdPTOf/+DILqESWy4tiDA==

;; TRACE
;  68.45.51.198.in-addr.arpa PTR
;  . @m.root-servers.net (202.12.27.33) 15 ms [NOERROR qr]: referral to in-addr.arpa.
in-addr.arpa.		NS	f.in-addr-servers.arpa.	; 193.0.9.1 2a13:27c0:30::1
in-addr.arpa.		NS	d.in-addr-servers.arpa.	; 200.10.60.53 2001:13c7:7010::53
in-addr.arpa.		NS	b.in-addr-servers.arpa.	; 199.253.183.183 2001:500:87::87
in-addr.arpa.		NS	a.in-addr-servers.arpa.	; 199.180.182.53 2620:37:e000::53
in-addr.arpa.		NS	c.in-addr-servers.arpa.	; 196.216.169.10 2001:43f8:110::10
in-addr.arpa.		NS	e.in-addr-servers.arpa.	; 203.119.86.101 2001:dd8:6::101
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. @d.in-addr-servers.arpa (200.10.60.53) 118 ms [NOERROR qr]: referral to 198.in-addr.arpa.
198.in-addr.arpa.		NS	x.arin.net.	; 199.180.180.63 2001:500:f0::63
198.in-addr.arpa.		NS	z.arin.net.	; 199.180.180.63 2001:500:f0::63
198.in-addr.arpa.		NS	r.arin.net.	; 199.180.180.63 2001:500:f0::63
198.in-addr.arpa.		NS	arin.authdns.ripe.net.	; 193.0.9.10 2a13:27c0:30::10
198.in-addr.arpa.		NS	u.arin.net.	; 204.61.216.50 2001:500:14:6050:ad::1
198.in-addr.arpa.		NS	y.arin.net.	; 192.82.134.30 2001:500:127::30
198.in-addr.arpa.	86400	IN	DS	38425 8 2 5D11A7E945A7A04DBC9C5E6FB02A87319AABB8A4C44F336F2640BE95A322EC84
;  198.in-addr.arpa. @r.arin.net (199.180.180.63) 90 ms [NOERROR qr]: referral to 45.51.198.in-addr.arpa.
45.51.198.in-addr.arpa.		NS	dns3.p08.nsone.net.	; 198.51.44.72 2620:4d:4000:6259:7:8:0:3
45.51.198.in-addr.arpa.		NS	dns1.p08.nsone.net.	; 198.51.44.8 2620:4d:4000:6259:7:8:0:1
45.51.198.in-addr.arpa.		NS	dns2.p08.nsone.net.	; 198.51.45.8 2a00:edc0:6259:7:8::2
45.51.198.in-addr.arpa.		NS	dns4.p08.nsone.net.	; 198.51.45.72 2a00:edc0:6259:7:8::4
45.51.198.in-addr.arpa.	86400	IN	DS	48553 13 2 FCDF757052D12A81A2FD16CB2F3CEC843187521E025402882CCD3D6425F83EAA
;  45.51.198.in-addr.arpa. @dns2.p08.nsone.net (198.51.45.8) 6.5 ms [NOERROR qr aa]: answer
68.45.51.198.in-addr.arpa.	3600	IN	PTR	dns4.p04.nsone.net.

;; NAMESERVERS (SOA asked of each address)
;  dns1.p08.nsone.net [parent+zone]
;    198.51.44.8                             ok                        1624991982  14 ms
;    2620:4d:4000:6259:7:8:0:1               ok                        1624991982  14 ms
;  dns2.p08.nsone.net [parent+zone]
;    198.51.45.8                             ok                        1624991982  6.4 ms
;    2a00:edc0:6259:7:8::2                   ok                        1624991982  13 ms
;  dns3.p08.nsone.net [parent+zone]
;    198.51.44.72                            ok                        1624991982  16 ms
;    2620:4d:4000:6259:7:8:0:3               ok                        1624991982  14 ms
;  dns4.p08.nsone.net [parent+zone]
;    198.51.45.72                            ok                        1624991982  6.4 ms
;    2a00:edc0:6259:7:8::4                   ok                        1624991982  13 ms

;; DNSSEC: signed (Cloudflare: secure, Google: secure)
45.51.198.in-addr.arpa.	86400	IN	DS	48553 13 2 FCDF757052D12A81A2FD16CB2F3CEC843187521E025402882CCD3D6425F83EAA	; matches DNSKEY
45.51.198.in-addr.arpa.	60	IN	DNSKEY	257 3 13 t+4DPP+MFZ0Cr7gAXiDYv6HTyXzq/O2ESVRLc/ysuh5xBXKIsjsj5baV1HzhBNo2F7mbsevsEo0/6UEL8+JBmA==	; tag 48553
45.51.198.in-addr.arpa.	60	IN	DNSKEY	256 3 13 3u9onSaqbxIlglXMHjh5Plcah8n2pXj0QuBVY/6YTdC6L/eUEYPDh57nOVJ8dd3fkPMrjt2Oij6J9EeLqyeuBw==	; tag 12196

;; HOSTS
;  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.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.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.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)
;  dns4.p04.nsone.net (PTR target)
;    198.51.45.68                            PTR dns4.p04.nsone.net (confirmed)
;    2a00:edc0:6259:7:4::4                   PTR dns4.p04.nsone.net (confirmed)

;; PUBLIC RESOLVERS
;  Cloudflare PTR   dns4.p04.nsone.net.  ttl 3600  ad
;  Google     PTR   dns4.p04.nsone.net.  ttl 2964  ad
;  Quad9      PTR   dns4.p04.nsone.net.  ttl 3600  ad
;  OpenDNS    PTR   dns4.p04.nsone.net.  ttl 51  ad