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.

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

4.0.0.0.0.0.0.0.0.0.0.0.4.0.0.0.7.0.0.0.9.5.2.6.0.c.d.e.0.0.a.2.ip6.arpa

Zone 0.c.d.e.0.0.a.2.ip6.arpa93 queries in 1.9 s2026-11-09 06:13:18 UTCDNSSEC signed

WHOIS for 2a00:edc0:6259:7:4::4 →Text JSON

No problems found.

Records

Asked directly of dns2.p05.nsone.net (198.51.45.5), an authoritative server: no cache in between, so these are the live values.

PTR Reverse pointer

3600

PTR

dns4.p04.nsone.net.

ANY query: refused politely (RFC 8482)

3600

HINFO

"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

.asked i.root-servers.net 192.36.148.175.8 ms
Referral to ip6.arpa. signed (3 DS)
- d.ip6-servers.arpa 200.7.86.53 2001:13c7:7012::53
- f.ip6-servers.arpa 193.0.9.2 2a13:27c0:30::2
- a.ip6-servers.arpa 199.180.182.53 2620:37:e000::53
- c.ip6-servers.arpa 196.216.169.11 2001:43f8:110::11
- b.ip6-servers.arpa 199.253.182.182 2001:500:86::86
- e.ip6-servers.arpa 203.119.86.101 2001:dd8:6::101
ip6.arpa.asked a.ip6-servers.arpa 199.180.182.5390 ms
Referral to 0.a.2.ip6.arpa. signed (1 DS)
- rirns.arin.net 199.253.249.53 2620:38:2000::53
- ns4.apnic.net 202.12.31.53 2001:dd8:12::53
- pri.authdns.ripe.net 193.0.9.5 2a13:27c0:30::5
- ns3.lacnic.net 200.3.13.14 2001:13c7:7002:3000::14
- ns3.afrinic.net 204.61.216.100 2001:500:14:6100:ad::1
No glue for rirns.arin.net, ns4.apnic.net, pri.authdns.ripe.net, ns3.lacnic.net, ns3.afrinic.net: addresses looked up via a resolver.
0.a.2.ip6.arpa.asked ns4.apnic.net 202.12.31.5316 ms
Referral to 0.c.d.e.0.0.a.2.ip6.arpa. signed (1 DS)
- dns3.p05.nsone.net 198.51.44.69 2620:4d:4000:6259:7:5:0:3
- dns1.p05.nsone.net 198.51.44.5 2620:4d:4000:6259:7:5:0:1
- dns2.p05.nsone.net 198.51.45.5 2a00:edc0:6259:7:5::2
- dns4.p05.nsone.net 198.51.45.69 2a00:edc0:6259:7:5::4
No glue for dns3.p05.nsone.net, dns1.p05.nsone.net, dns2.p05.nsone.net, dns4.p05.nsone.net: addresses looked up via a resolver.
0.c.d.e.0.0.a.2.ip6.arpa.asked dns4.p05.nsone.net 198.51.45.696.2 ms
Answer (authoritative):
4.0.0.0.0.0.0.0.0.0.0.0.4.0.0.0.7.0.0.0.9.5.2.6.0.c.d.e.0.0.a.2.ip6.arpa. 3600 PTR dns4.p04.nsone.net.

Nameservers

Every address of every nameserver, asked for 0.c.d.e.0.0.a.2.ip6.arpa's SOA. "Parent" means the 0.a.2.ip6.arpa zone delegates to it; "zone" means 0.c.d.e.0.0.a.2.ip6.arpa lists it itself.

Nameserver

Listed in

Address

Status

Serial

Time

dns1.p05.nsone.net

parent + zone

198.51.44.5 glue

authoritative

1626120484

14 ms

2620:4d:4000:6259:7:5:0:1 glue

authoritative

1626120484

14 ms

dns2.p05.nsone.net

parent + zone

198.51.45.5 glue

authoritative

1626120484

6.1 ms

2a00:edc0:6259:7:5::2 glue

authoritative

1626120484

12 ms

dns3.p05.nsone.net

parent + zone

198.51.44.69 glue

authoritative

1626120484

14 ms

2620:4d:4000:6259:7:5:0:3 glue

authoritative

1626120484

14 ms

dns4.p05.nsone.net

parent + zone

198.51.45.69 glue

authoritative

1626120484

7.8 ms

2a00:edc0:6259:7:5::4 glue

authoritative

1626120484

12 ms

DNSSEC

0.c.d.e.0.0.a.2.ip6.arpa is signed, and the 0.a.2.ip6.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

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.p05.nsone.net

nameserver

198.51.44.5

dns1.p05.nsone.net ✓

2620:4d:4000:6259:7:5:0:1

dns1.p05.nsone.net ✓

dns2.p05.nsone.net

nameserver

198.51.45.5

dns2.p05.nsone.net ✓

2a00:edc0:6259:7:5::2

dns2.p05.nsone.net ✓

dns3.p05.nsone.net

nameserver

198.51.44.69

dns3.p05.nsone.net ✓

2620:4d:4000:6259:7:5:0:3

dns3.p05.nsone.net ✓

dns4.p05.nsone.net

nameserver

198.51.45.69

dns4.p05.nsone.net ✓

2a00:edc0:6259:7:5::4

dns4.p05.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

Google 8.8.8.8

dns4.p04.nsone.net.

TTL 3600

Quad9 9.9.9.9

dns4.p04.nsone.net.

TTL 3600

OpenDNS 208.67.222.222

dns4.p04.nsone.net.

TTL 3600

Text dump

; DNS report for 4.0.0.0.0.0.0.0.0.0.0.0.4.0.0.0.7.0.0.0.9.5.2.6.0.c.d.e.0.0.a.2.ip6.arpa (2a00:edc0:6259:7:4::4)
; 2026-11-09 06:13:18 UTC, 93 queries in 1.87 s, zone 0.c.d.e.0.0.a.2.ip6.arpa

;; FINDINGS
;  [OK] No problems found.

;; RECORDS (authoritative, from dns2.p05.nsone.net (198.51.45.5))
4.0.0.0.0.0.0.0.0.0.0.0.4.0.0.0.7.0.0.0.9.5.2.6.0.c.d.e.0.0.a.2.ip6.arpa.	3600	IN	PTR	dns4.p04.nsone.net.

;; TRACE
;  4.0.0.0.0.0.0.0.0.0.0.0.4.0.0.0.7.0.0.0.9.5.2.6.0.c.d.e.0.0.a.2.ip6.arpa PTR
;  . @i.root-servers.net (192.36.148.17) 5.8 ms [NOERROR qr]: referral to ip6.arpa.
ip6.arpa.		NS	d.ip6-servers.arpa.	; 200.7.86.53 2001:13c7:7012::53
ip6.arpa.		NS	f.ip6-servers.arpa.	; 193.0.9.2 2a13:27c0:30::2
ip6.arpa.		NS	a.ip6-servers.arpa.	; 199.180.182.53 2620:37:e000::53
ip6.arpa.		NS	c.ip6-servers.arpa.	; 196.216.169.11 2001:43f8:110::11
ip6.arpa.		NS	b.ip6-servers.arpa.	; 199.253.182.182 2001:500:86::86
ip6.arpa.		NS	e.ip6-servers.arpa.	; 203.119.86.101 2001:dd8:6::101
ip6.arpa.	86400	IN	DS	64060 8 2 8A11501086330132BE2C23F22DEDF0634AD5FF668B4AA1988E172C6A2A4E5F7B
ip6.arpa.	86400	IN	DS	45094 8 2 E6B54E0A20CE1EDBFCB6879C02F5782059CECB043A31D804A04AFA51AF01D5FB
ip6.arpa.	86400	IN	DS	13880 8 2 068554EFCB5861F42AF93EF8E79C442A86C16FC5652E6B6D2419ED527F344D17
;  ip6.arpa. @a.ip6-servers.arpa (199.180.182.53) 90 ms [NOERROR qr]: referral to 0.a.2.ip6.arpa.
0.a.2.ip6.arpa.		NS	rirns.arin.net.	; 199.253.249.53 2620:38:2000::53
0.a.2.ip6.arpa.		NS	ns4.apnic.net.	; 202.12.31.53 2001:dd8:12::53
0.a.2.ip6.arpa.		NS	pri.authdns.ripe.net.	; 193.0.9.5 2a13:27c0:30::5
0.a.2.ip6.arpa.		NS	ns3.lacnic.net.	; 200.3.13.14 2001:13c7:7002:3000::14
0.a.2.ip6.arpa.		NS	ns3.afrinic.net.	; 204.61.216.100 2001:500:14:6100:ad::1
0.a.2.ip6.arpa.	86400	IN	DS	6737 13 2 F346C2BE7A1D04F367DC2B24556FA5F6AE515F4C005C7D44508B31E8D79C9694
;  0.a.2.ip6.arpa. @ns4.apnic.net (202.12.31.53) 16 ms [NOERROR qr]: referral to 0.c.d.e.0.0.a.2.ip6.arpa.
0.c.d.e.0.0.a.2.ip6.arpa.		NS	dns3.p05.nsone.net.	; 198.51.44.69 2620:4d:4000:6259:7:5:0:3
0.c.d.e.0.0.a.2.ip6.arpa.		NS	dns1.p05.nsone.net.	; 198.51.44.5 2620:4d:4000:6259:7:5:0:1
0.c.d.e.0.0.a.2.ip6.arpa.		NS	dns2.p05.nsone.net.	; 198.51.45.5 2a00:edc0:6259:7:5::2
0.c.d.e.0.0.a.2.ip6.arpa.		NS	dns4.p05.nsone.net.	; 198.51.45.69 2a00:edc0:6259:7:5::4
0.c.d.e.0.0.a.2.ip6.arpa.	3600	IN	DS	48553 13 2 B221CDB67EEE5ACCB880CBDC508829643E4A0A7B3FE2C05EC662901C9D1FF290
;  0.c.d.e.0.0.a.2.ip6.arpa. @dns4.p05.nsone.net (198.51.45.69) 6.2 ms [NOERROR qr aa]: answer
4.0.0.0.0.0.0.0.0.0.0.0.4.0.0.0.7.0.0.0.9.5.2.6.0.c.d.e.0.0.a.2.ip6.arpa.	3600	IN	PTR	dns4.p04.nsone.net.

;; NAMESERVERS (SOA asked of each address)
;  dns1.p05.nsone.net [parent+zone]
;    198.51.44.5                             ok                        1626120484  14 ms
;    2620:4d:4000:6259:7:5:0:1               ok                        1626120484  14 ms
;  dns2.p05.nsone.net [parent+zone]
;    198.51.45.5                             ok                        1626120484  6.1 ms
;    2a00:edc0:6259:7:5::2                   ok                        1626120484  12 ms
;  dns3.p05.nsone.net [parent+zone]
;    198.51.44.69                            ok                        1626120484  14 ms
;    2620:4d:4000:6259:7:5:0:3               ok                        1626120484  14 ms
;  dns4.p05.nsone.net [parent+zone]
;    198.51.45.69                            ok                        1626120484  7.8 ms
;    2a00:edc0:6259:7:5::4                   ok                        1626120484  12 ms

;; DNSSEC: signed (Cloudflare: secure, Google: secure)
0.c.d.e.0.0.a.2.ip6.arpa.	3600	IN	DS	48553 13 2 B221CDB67EEE5ACCB880CBDC508829643E4A0A7B3FE2C05EC662901C9D1FF290	; matches DNSKEY
0.c.d.e.0.0.a.2.ip6.arpa.	3600	IN	DNSKEY	257 3 13 t+4DPP+MFZ0Cr7gAXiDYv6HTyXzq/O2ESVRLc/ysuh5xBXKIsjsj5baV1HzhBNo2F7mbsevsEo0/6UEL8+JBmA==	; tag 48553
0.c.d.e.0.0.a.2.ip6.arpa.	3600	IN	DNSKEY	256 3 13 3u9onSaqbxIlglXMHjh5Plcah8n2pXj0QuBVY/6YTdC6L/eUEYPDh57nOVJ8dd3fkPMrjt2Oij6J9EeLqyeuBw==	; tag 12196

;; HOSTS
;  dns1.p05.nsone.net (nameserver)
;    198.51.44.5                             PTR dns1.p05.nsone.net (confirmed)
;    2620:4d:4000:6259:7:5:0:1               PTR dns1.p05.nsone.net (confirmed)
;  dns2.p05.nsone.net (nameserver)
;    198.51.45.5                             PTR dns2.p05.nsone.net (confirmed)
;    2a00:edc0:6259:7:5::2                   PTR dns2.p05.nsone.net (confirmed)
;  dns3.p05.nsone.net (nameserver)
;    198.51.44.69                            PTR dns3.p05.nsone.net (confirmed)
;    2620:4d:4000:6259:7:5:0:3               PTR dns3.p05.nsone.net (confirmed)
;  dns4.p05.nsone.net (nameserver)
;    198.51.45.69                            PTR dns4.p05.nsone.net (confirmed)
;    2a00:edc0:6259:7:5::4                   PTR dns4.p05.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
;  Google     PTR   dns4.p04.nsone.net.  ttl 3600
;  Quad9      PTR   dns4.p04.nsone.net.  ttl 3600
;  OpenDNS    PTR   dns4.p04.nsone.net.  ttl 3600