51257.us - robtex.com

51257.us

DNSSEC⚠️ Not signed
A44.197.3.205🇺🇸 Amazon44.192.0.0/11 EC2 IAD prefix
PTRec2-44-197-3-205.compute-1.amazonaws.com
NSns1.parkco2.neustar.biz ⭐
A3.220.94.231🇺🇸 Amazon3.208.0.0/12 EC2 IAD prefix
PTRec2-3-220-94-231.compute-1.amazonaws.com
NSns2.parkco2.neustar.biz
A3.227.227.44🇺🇸 Amazon3.224.0.0/12 EC2 IAD prefix
PTRec2-3-227-227-44.compute-1.amazonaws.com
TXTv=spf1 -all
SOAns1.parkco2.neustar.bizhostmaster@neustar.biz 2026-03-06 #1

us

DNSSEC🔒 Signed (DS record present)
NSa.cctld.us ⭐
NSb.cctld.us
NSf.cctld.us
NSk.cctld.us
NSm.cctld.us
NSn.cctld.us
NSw.cctld.us
NSx.cctld.us
NSy.cctld.us
SOAa.cctld.usadmin@tldns.godaddy serial=1781672088

Same first word

51257.us

Similar names

51572.cn
15257.cn
55172.com
57251.sbs
55172.co
25175.net
75251.cc
25715.my
52175.com
52715.cc
72515.us
75521.us
12557.com
75125.com
17552.com
57512.us
25517.us
17525.us
55721.com
15725.vip
17525.net
17255.org
25715.com
57251.cn
21557.cc
15752.us
27515.us
75125.cc
17255.com
75251.us
75521.com
27155.com
55712.com
12575.com
55721.co
75152.us
27155.org
51752.us
17525.com
21755.de
21557.com
12557.de
51527.us
12575.pro
15725.us
51527.com
12557.cc
12755.com
57152.com
75125.us
27515.id
55127.us
15527.com
15752.com
75125.cn
21575.com
25175.com
27551.us
51725.com
17255.de
55217.com

DNS History

21 records (3 active, 18 former)

20162017201820192020202120222023202420252026NSns1.parkco2.neustar.bizns2.parkco2.neustar.bizA44.197.3.205107.23.215.133.212.149.18544.222.57.2352.0.47.13152.201.3.12252.5.55.9752.54.147.23552.7.123.22452.7.196.23252.86.135.12552.86.21.18854.152.227.17854.165.136.19054.210.233.19154.84.173.58CNAMEpr-zipcodes-us.neuweb.bizws-pr-web-zipcodes-525549249.us-east-1.elb.amazonaws.comzip-lb.neuweb.biz
●NSns1.parkco2.neustar.biz2026-06-11 → 2026-06-17 · 2 obs
● 2026-06-11 23:39:44
● 2026-06-17 05:31:34
●NSns2.parkco2.neustar.biz2026-06-11 → 2026-06-17 · 2 obs
● 2026-06-11 23:39:44
● 2026-06-17 05:31:34
○A107.23.215.132015-10-22 → 2015-10-22 · 4 obs
○ 2015-05-30 06:27:08
● 2015-10-22 16:34:56
○ 2015-12-29 19:52:14
○ 2026-06-17 05:31:34
○A3.212.149.1852026-06-12 → 2026-06-12 · 4 obs
○ 2026-06-11 23:39:44
● 2026-06-12 16:42:56
○ 2026-06-14 10:59:38
○ 2026-06-17 05:31:34
●A44.197.3.2052026-06-16 → 2026-06-17 · 3 obs
○ 2026-06-14 10:59:38
● 2026-06-16 21:30:24
● 2026-06-17 05:31:34
○A44.222.57.232026-06-11 → 2026-06-14 · 6 obs
○ 2017-07-08 15:14:40
● 2026-06-11 23:39:44
○ 2026-06-12 16:42:56
● 2026-06-14 10:59:38
○ 2026-06-16 21:30:24
○ 2026-06-17 05:31:34
○A52.0.47.1312015-05-30 → 2015-05-30 · 3 obs
● 2015-05-30 06:27:08
○ 2017-07-08 15:14:40
○ 2026-06-17 05:31:34
○A52.201.3.1222016-11-27 → 2016-11-27 · 4 obs
○ 2016-04-05 04:34:36
● 2016-11-27 08:44:12
○ 2017-07-08 15:14:40
○ 2026-06-17 05:31:34
○A52.5.55.972016-04-05 → 2016-04-05 · 4 obs
○ 2015-12-29 19:52:14
● 2016-04-05 04:34:36
○ 2016-11-27 08:44:12
○ 2026-06-17 05:31:34
○A52.54.147.2352016-11-27 → 2016-11-27 · 4 obs
○ 2016-04-05 04:34:36
● 2016-11-27 08:44:12
○ 2017-07-08 15:14:40
○ 2026-06-17 05:31:34
○A52.7.123.2242015-12-29 → 2015-12-29 · 4 obs
○ 2015-10-22 16:34:56
● 2015-12-29 19:52:14
○ 2016-04-05 04:34:36
○ 2026-06-17 05:31:34
○A52.7.196.2322015-05-30 → 2015-05-30 · 3 obs
● 2015-05-30 06:27:08
○ 2017-07-08 15:14:40
○ 2026-06-17 05:31:34
○A52.86.135.1252016-11-27 → 2016-11-27 · 4 obs
○ 2016-04-05 04:34:36
● 2016-11-27 08:44:12
○ 2017-07-08 15:14:40
○ 2026-06-17 05:31:34
○A52.86.21.1882016-04-05 → 2016-04-05 · 4 obs
○ 2015-12-29 19:52:14
● 2016-04-05 04:34:36
○ 2016-11-27 08:44:12
○ 2026-06-17 05:31:34
○A54.152.227.1782015-10-22 → 2015-10-22 · 4 obs
○ 2015-05-30 06:27:08
● 2015-10-22 16:34:56
○ 2015-12-29 19:52:14
○ 2026-06-17 05:31:34
○A54.165.136.1902016-04-05 → 2016-04-05 · 4 obs
○ 2015-12-29 19:52:14
● 2016-04-05 04:34:36
○ 2016-11-27 08:44:12
○ 2026-06-17 05:31:34
○A54.210.233.1912015-12-29 → 2015-12-29 · 4 obs
○ 2015-10-22 16:34:56
● 2015-12-29 19:52:14
○ 2016-04-05 04:34:36
○ 2026-06-17 05:31:34
○A54.84.173.582015-10-22 → 2015-10-22 · 4 obs
○ 2015-05-30 06:27:08
● 2015-10-22 16:34:56
○ 2015-12-29 19:52:14
○ 2026-06-17 05:31:34
○CNAMEpr-zipcodes-us.neuweb.biz2015-10-22 → 2016-11-27 · 5 obs
○ 2015-05-30 06:27:08
● 2015-10-22 16:34:56
● 2016-11-27 08:44:12
○ 2017-07-08 15:14:40
○ 2026-06-17 05:31:34
○CNAMEws-pr-web-zipcodes-525549249.us-east-1.elb.amazonaws.com2015-10-22 → 2016-11-27 · 5 obs
○ 2015-05-30 06:27:08
● 2015-10-22 16:34:56
● 2016-11-27 08:44:12
○ 2017-07-08 15:14:40
○ 2026-06-17 05:31:34
○CNAMEzip-lb.neuweb.biz2015-05-30 → 2017-07-08 · 4 obs
● 2015-05-30 06:27:08
● 2017-07-08 15:14:40
○ 2026-06-11 23:39:44
○ 2026-06-17 05:31:34

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
usf.cctld.us, y.cctld.us, w.cctld.us, n.cctld.us...-
51257.usns1.parkco2.neustar.biz, ns2.parkco2.neustar.biz-

✅ Authoritative Response

Server:3.220.94.231

NS records: ns1.parkco2.neustar.biz, ns2.parkco2.neustar.biz

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for 51257.us (unsigned zone)

⏱️ Timing

Total: 238ms | Queries: -

📄 Records

TypeCountSample Data
A144.197.3.205
NS2ns2.parkco2.neustar.biz, ns1.parkco2.neustar.biz
TXT1v=spf1 -all
SOA1ns1.parkco2.neustar.biz hostmaster.neust

Analysis

IP Addresses

51257.us has exactly one IP address — 44.197.3.205.

19601.us, 72079.us, 83424.us plus two other host names have IP numbers in common with 51257.us.

Name Servers

51257.us is served by two delegated name servers, ns1.parkco2.neustar.biz and ns2.parkco2.neustar.biz.

The name server configuration of 51257.us is shared with other domains, for instance 07135.us, 65252.us, 52005.us and two others.

ns1.parkco2.neustar.biz directs to 3.220.94.231 and ns2.parkco2.neustar.biz directs to 3.227.227.44; each host name points to exactly one IP number.