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.

156.154.65.10

10.65.154.156.in-addr.arpa

Zone 65.154.156.in-addr.arpa124 queries in 0.7 s2026-11-09 05:45:06 UTCNot DNSSEC-signed

WHOIS for 156.154.65.10 →Text JSON

Warning The parent zone delegates to pdns1.ultradns.net, pdns2.ultradns.net, pdns3.ultradns.org, pdns4.ultradns.org, pdns5.ultradns.info, pdns6.ultradns.co.uk but 65.154.156.in-addr.arpa itself lists udns1.ultradns.net, udns2.ultradns.net. Make the two lists match.
Note 65.154.156.in-addr.arpa isn't signed with DNSSEC, so resolvers can't tell forged answers from real ones.

Records

Asked directly of pdns1.ultradns.net (204.74.108.1), an authoritative server: no cache in between, so these are the live values.

PTR Reverse pointer

86400

PTR

u2.amazonaws.com.

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 f.root-servers.net 192.5.5.2416.3 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
in-addr.arpa.asked b.in-addr-servers.arpa 199.253.183.1836.4 ms
Referral to 156.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.
196.216.169.10 failed: NOERROR
156.in-addr.arpa.asked x.arin.net 199.180.180.6391 ms
Referral to 65.154.156.in-addr.arpa. unsigned delegation
- pdns6.ultradns.co.uk 204.74.115.1 2610:a1:1017::1
- pdns4.ultradns.org 199.7.69.1 2001:502:4612::1
- pdns1.ultradns.net 204.74.108.1 2001:502:f3ff::1
- pdns3.ultradns.org 199.7.68.1 2610:a1:1015::1
- pdns2.ultradns.net 204.74.109.1 2610:a1:1014::1
- pdns5.ultradns.info 204.74.114.1 2610:a1:1016::1
No glue for pdns6.ultradns.co.uk, pdns4.ultradns.org, pdns1.ultradns.net, pdns3.ultradns.org, pdns2.ultradns.net, pdns5.ultradns.info: addresses looked up via a resolver.
199.180.180.63 failed: NOERROR
65.154.156.in-addr.arpa.asked pdns1.ultradns.net 204.74.108.15.6 ms
Answer (authoritative):
10.65.154.156.in-addr.arpa. 86400 PTR u2.amazonaws.com.
199.7.68.1 failed: NOERROR

Nameservers

Every address of every nameserver, asked for 65.154.156.in-addr.arpa's SOA. "Parent" means the 156.in-addr.arpa zone delegates to it; "zone" means 65.154.156.in-addr.arpa lists it itself.

Nameserver

Listed in

Address

Status

Serial

Time

pdns1.ultradns.net

parent

204.74.108.1 glue

authoritative

2013082740

5.6 ms

2001:502:f3ff::1 glue

authoritative

2013082740

5.6 ms

pdns2.ultradns.net

parent

204.74.109.1 glue

authoritative

2013082740

5.9 ms

2610:a1:1014::1 glue

authoritative

2013082740

6.2 ms

pdns3.ultradns.org

parent

199.7.68.1 glue

authoritative

2013082740

6.1 ms

2610:a1:1015::1 glue

authoritative

2013082740

6.0 ms

pdns4.ultradns.org

parent

199.7.69.1 glue

authoritative

2013082740

29 ms

2001:502:4612::1 glue

authoritative

2013082740

30 ms

pdns5.ultradns.info

parent

204.74.114.1 glue

authoritative

2013082740

5.9 ms

2610:a1:1016::1 glue

authoritative

2013082740

7.9 ms

pdns6.ultradns.co.uk

parent

204.74.115.1 glue

authoritative

2013082740

16 ms

2610:a1:1017::1 glue

authoritative

2013082740

17 ms

udns1.ultradns.net

zone

204.69.234.1

authoritative

2013082740

6.9 ms

2001:502:f3ff::d

authoritative

2013082740

6.8 ms

udns2.ultradns.net

zone

204.74.101.1

authoritative

2013082740

29 ms

2610:a1:1014::d

authoritative

2013082740

6.8 ms

DNSSEC

65.154.156.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.

Host

Address

Reverse DNS (PTR)

pdns1.ultradns.net

nameserver

204.74.108.1

pdns1.ultradns.net ✓

2001:502:f3ff::1

pdns1.ultradns.net ✓

pdns2.ultradns.net

nameserver

204.74.109.1

pdns2.ultradns.net ✓

2610:a1:1014::1

pdns2.ultradns.net ✓

pdns3.ultradns.org

nameserver

199.7.68.1

pdns3.ultradns.org ✓

2610:a1:1015::1

pdns3.ultradns.org ✓

pdns4.ultradns.org

nameserver

199.7.69.1

pdns4.ultradns.org ✓

2001:502:4612::1

pdns4.ultradns.org ✓

pdns5.ultradns.info

nameserver

204.74.114.1

pdns5.ultradns.info ✓

2610:a1:1016::1

pdns5.ultradns.info ✓

pdns6.ultradns.co.uk

nameserver

204.74.115.1

pdns6.ultradns.co.uk ✓

2610:a1:1017::1

pdns6.ultradns.co.uk ✓

udns1.ultradns.net

nameserver

204.69.234.1

udns1.ultradns.net ✓

2001:502:f3ff::d

udns1.ultradns.net ✓

udns2.ultradns.net

nameserver

204.74.101.1

udns2.ultradns.net ✓

2610:a1:1014::d

udns2.ultradns.net ✓

u2.amazonaws.com

PTR target

156.154.65.10

u2.amazonaws.com ✓

2610:a1:1014::10

u2.amazonaws.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.

Resolver

PTR

Cloudflare 1.1.1.1

u2.amazonaws.com.

TTL 86400

Google 8.8.8.8

u2.amazonaws.com.

TTL 14939

Quad9 9.9.9.9

u2.amazonaws.com.

TTL 43200

OpenDNS 208.67.222.222

u2.amazonaws.com.

TTL 86400

Text dump

; DNS report for 10.65.154.156.in-addr.arpa (156.154.65.10)
; 2026-11-09 05:45:06 UTC, 124 queries in 0.73 s, zone 65.154.156.in-addr.arpa

;; FINDINGS
;  [WARN] The parent zone delegates to pdns1.ultradns.net, pdns2.ultradns.net, pdns3.ultradns.org, pdns4.ultradns.org, pdns5.ultradns.info, pdns6.ultradns.co.uk but 65.154.156.in-addr.arpa itself lists udns1.ultradns.net, udns2.ultradns.net. Make the two lists match.
;  [INFO] 65.154.156.in-addr.arpa isn't signed with DNSSEC, so resolvers can't tell forged answers from real ones.

;; RECORDS (authoritative, from pdns1.ultradns.net (204.74.108.1))
10.65.154.156.in-addr.arpa.	86400	IN	PTR	u2.amazonaws.com.

;; TRACE
;  10.65.154.156.in-addr.arpa PTR
;  . @f.root-servers.net (192.5.5.241) 6.3 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) 6.4 ms [NOERROR qr]: referral to 156.in-addr.arpa.
156.in-addr.arpa.		NS	r.arin.net.	; 199.180.180.63 2001:500:f0::63
156.in-addr.arpa.		NS	u.arin.net.	; 204.61.216.50 2001:500:14:6050:ad::1
156.in-addr.arpa.		NS	x.arin.net.	; 199.180.180.63 2001:500:f0::63
156.in-addr.arpa.		NS	y.arin.net.	; 192.82.134.30 2001:500:127::30
156.in-addr.arpa.		NS	z.arin.net.	; 199.180.180.63 2001:500:f0::63
156.in-addr.arpa.		NS	arin.authdns.ripe.net.	; 193.0.9.10 2a13:27c0:30::10
156.in-addr.arpa.	86400	IN	DS	55537 8 2 0EFB64C6ECD139A1773F114F0724814AF8B145BAA9DB61C98438BC082E2D02A1
;  156.in-addr.arpa. @x.arin.net (199.180.180.63) 91 ms [NOERROR qr]: referral to 65.154.156.in-addr.arpa.
65.154.156.in-addr.arpa.		NS	pdns6.ultradns.co.uk.	; 204.74.115.1 2610:a1:1017::1
65.154.156.in-addr.arpa.		NS	pdns4.ultradns.org.	; 199.7.69.1 2001:502:4612::1
65.154.156.in-addr.arpa.		NS	pdns1.ultradns.net.	; 204.74.108.1 2001:502:f3ff::1
65.154.156.in-addr.arpa.		NS	pdns3.ultradns.org.	; 199.7.68.1 2610:a1:1015::1
65.154.156.in-addr.arpa.		NS	pdns2.ultradns.net.	; 204.74.109.1 2610:a1:1014::1
65.154.156.in-addr.arpa.		NS	pdns5.ultradns.info.	; 204.74.114.1 2610:a1:1016::1
;  65.154.156.in-addr.arpa. @pdns1.ultradns.net (204.74.108.1) 5.6 ms [NOERROR qr aa]: answer
10.65.154.156.in-addr.arpa.	86400	IN	PTR	u2.amazonaws.com.

;; NAMESERVERS (SOA asked of each address)
;  pdns1.ultradns.net [parent]
;    204.74.108.1                            ok                        2013082740  5.6 ms
;    2001:502:f3ff::1                        ok                        2013082740  5.6 ms
;  pdns2.ultradns.net [parent]
;    204.74.109.1                            ok                        2013082740  5.9 ms
;    2610:a1:1014::1                         ok                        2013082740  6.2 ms
;  pdns3.ultradns.org [parent]
;    199.7.68.1                              ok                        2013082740  6.1 ms
;    2610:a1:1015::1                         ok                        2013082740  6.0 ms
;  pdns4.ultradns.org [parent]
;    199.7.69.1                              ok                        2013082740  29 ms
;    2001:502:4612::1                        ok                        2013082740  30 ms
;  pdns5.ultradns.info [parent]
;    204.74.114.1                            ok                        2013082740  5.9 ms
;    2610:a1:1016::1                         ok                        2013082740  7.9 ms
;  pdns6.ultradns.co.uk [parent]
;    204.74.115.1                            ok                        2013082740  16 ms
;    2610:a1:1017::1                         ok                        2013082740  17 ms
;  udns1.ultradns.net [zone]
;    204.69.234.1                            ok                        2013082740  6.9 ms
;    2001:502:f3ff::d                        ok                        2013082740  6.8 ms
;  udns2.ultradns.net [zone]
;    204.74.101.1                            ok                        2013082740  29 ms
;    2610:a1:1014::d                         ok                        2013082740  6.8 ms

;; DNSSEC: unsigned

;; HOSTS
;  pdns1.ultradns.net (nameserver)
;    204.74.108.1                            PTR pdns1.ultradns.net (confirmed)
;    2001:502:f3ff::1                        PTR pdns1.ultradns.net (confirmed)
;  pdns2.ultradns.net (nameserver)
;    204.74.109.1                            PTR pdns2.ultradns.net (confirmed)
;    2610:a1:1014::1                         PTR pdns2.ultradns.net (confirmed)
;  pdns3.ultradns.org (nameserver)
;    199.7.68.1                              PTR pdns3.ultradns.org (confirmed)
;    2610:a1:1015::1                         PTR pdns3.ultradns.org (confirmed)
;  pdns4.ultradns.org (nameserver)
;    199.7.69.1                              PTR pdns4.ultradns.org (confirmed)
;    2001:502:4612::1                        PTR pdns4.ultradns.org (confirmed)
;  pdns5.ultradns.info (nameserver)
;    204.74.114.1                            PTR pdns5.ultradns.info (confirmed)
;    2610:a1:1016::1                         PTR pdns5.ultradns.info (confirmed)
;  pdns6.ultradns.co.uk (nameserver)
;    204.74.115.1                            PTR pdns6.ultradns.co.uk (confirmed)
;    2610:a1:1017::1                         PTR pdns6.ultradns.co.uk (confirmed)
;  udns1.ultradns.net (nameserver)
;    204.69.234.1                            PTR udns1.ultradns.net (confirmed)
;    2001:502:f3ff::d                        PTR udns1.ultradns.net (confirmed)
;  udns2.ultradns.net (nameserver)
;    204.74.101.1                            PTR udns2.ultradns.net (confirmed)
;    2610:a1:1014::d                         PTR udns2.ultradns.net (confirmed)
;  u2.amazonaws.com (PTR target)
;    156.154.65.10                           PTR u2.amazonaws.com (confirmed)
;    2610:a1:1014::10                        PTR u2.amazonaws.com (confirmed)

;; PUBLIC RESOLVERS
;  Cloudflare PTR   u2.amazonaws.com.  ttl 86400
;  Google     PTR   u2.amazonaws.com.  ttl 14939
;  Quad9      PTR   u2.amazonaws.com.  ttl 43200
;  OpenDNS    PTR   u2.amazonaws.com.  ttl 86400