21203.us - robtex.com

21203.us

DNSSEC⚠️ Not signed
A100.58.1.46🇺🇸 Amazon100.48.0.0/12 EC2 IAD prefix
PTRec2-100-58-1-46.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=1785916532

Same first word

21203.us
21203.cn

Similar names

01322.com
22031.cn
20312.xyz
12320.site
20123.de
02321.com
30122.com
02231.com
01232.cc
23210.us
20312.cn
22103.com
21320.xyz
22301.net
31220.com
21032.xyz
30122.cn
12302.biz
01232.us
03122.cn
02312.us
10223.us
31202.us
01232.com
22130.xyz
32102.com
12230.us
13202.us
13202.com
21230.cn
21230.xyz
23201.us
22013.us
01322.cn
02132.cc
20231.us
21320.cn
23210.com
12320.com
02132.us
20123.com
12032.com
23201.cn
13220.com
20231.cc
21023.com
23012.com
21230.com
12302.com
12023.com
32012.com
20312.com
03122.com
31202.cn
30212.us
10232.com
12320.com.cn
13022.us
21023.us
32021.net
20123.cc
31220.us
20321.us
23102.cfd
20132.us
31202.com
10223.ph
12203.com
21302.xyz
12302.xyz
32210.com
02213.cfd
01223.us
22301.vip
32201.cn
12302.cn
02312.com
21023.xyz
12302.net.cn
32210.us
12320.tv
22130.com
21320.us

DNS History

18 records (3 active, 15 former)

20162017201820192020202120222023202420252026NSns1.parkco2.neustar.bizns2.parkco2.neustar.bizA100.58.1.4652.1.79.21152.204.45.15552.21.10.6952.3.211.3652.6.237.24052.7.114.5152.7.171.20952.86.21.18854.164.193.1954.210.234.19354.236.94.19598.94.214.30CNAMEpr-zipcodes-us.neuweb.bizws-pr-web-zipcodes-525549249.us-east-1.elb.amazonaws.comzip-lb.neuweb.biz
●NSns1.parkco2.neustar.biz2026-08-03 → 2026-08-05 · 2 obs
● 2026-08-03 10:35:14
● 2026-08-05 08:13:56
●NSns2.parkco2.neustar.biz2026-08-03 → 2026-08-05 · 2 obs
● 2026-08-03 10:35:14
● 2026-08-05 08:13:56
●A100.58.1.462026-08-05 → 2026-08-05 · 2 obs
○ 2026-08-03 10:35:14
● 2026-08-05 08:13:56
○A52.1.79.2112016-07-17 → 2016-07-17 · 4 obs
○ 2016-03-18 05:04:50
● 2016-07-17 15:37:04
○ 2020-01-03 19:09:52
○ 2026-08-05 08:13:56
○A52.204.45.1552016-07-17 → 2016-07-17 · 4 obs
○ 2016-03-18 05:04:50
● 2016-07-17 15:37:04
○ 2020-01-03 19:09:52
○ 2026-08-05 08:13:56
○A52.21.10.692015-09-22 → 2015-09-22 · 4 obs
○ 2015-07-26 14:03:38
● 2015-09-22 21:26:58
○ 2015-12-16 18:23:42
○ 2026-08-05 08:13:56
○A52.3.211.362015-09-22 → 2015-09-22 · 4 obs
○ 2015-07-26 14:03:38
● 2015-09-22 21:26:58
○ 2015-12-16 18:23:42
○ 2026-08-05 08:13:56
○A52.6.237.2402015-09-22 → 2015-09-22 · 4 obs
○ 2015-07-26 14:03:38
● 2015-09-22 21:26:58
○ 2015-12-16 18:23:42
○ 2026-08-05 08:13:56
○A52.7.114.512015-07-26 → 2015-07-26 · 3 obs
● 2015-07-26 14:03:38
○ 2015-09-22 21:26:58
○ 2026-08-05 08:13:56
○A52.7.171.2092015-07-26 → 2015-07-26 · 3 obs
● 2015-07-26 14:03:38
○ 2015-09-22 21:26:58
○ 2026-08-05 08:13:56
○A52.86.21.1882016-03-18 → 2016-03-18 · 4 obs
○ 2015-12-16 18:23:42
● 2016-03-18 05:04:50
○ 2016-07-17 15:37:04
○ 2026-08-05 08:13:56
○A54.164.193.192015-12-16 → 2015-12-16 · 4 obs
○ 2015-09-22 21:26:58
● 2015-12-16 18:23:42
○ 2016-03-18 05:04:50
○ 2026-08-05 08:13:56
○A54.210.234.1932015-07-26 → 2015-07-26 · 3 obs
● 2015-07-26 14:03:38
○ 2015-09-22 21:26:58
○ 2026-08-05 08:13:56
○A54.236.94.1952016-07-17 → 2016-07-17 · 4 obs
○ 2016-03-18 05:04:50
● 2016-07-17 15:37:04
○ 2020-01-03 19:09:52
○ 2026-08-05 08:13:56
○A98.94.214.302026-08-03 → 2026-08-03 · 3 obs
○ 2020-01-03 19:09:52
● 2026-08-03 10:35:14
○ 2026-08-05 08:13:56
○CNAMEpr-zipcodes-us.neuweb.biz2015-09-22 → 2016-07-17 · 5 obs
○ 2015-07-26 14:03:38
● 2015-09-22 21:26:58
● 2016-07-17 15:37:04
○ 2020-01-03 19:09:52
○ 2026-08-05 08:13:56
○CNAMEws-pr-web-zipcodes-525549249.us-east-1.elb.amazonaws.com2015-09-22 → 2016-07-17 · 5 obs
○ 2015-07-26 14:03:38
● 2015-09-22 21:26:58
● 2016-07-17 15:37:04
○ 2020-01-03 19:09:52
○ 2026-08-05 08:13:56
○CNAMEzip-lb.neuweb.biz2015-07-26 → 2020-01-03 · 4 obs
● 2015-07-26 14:03:38
● 2020-01-03 19:09:52
○ 2026-08-03 10:35:14
○ 2026-08-05 08:13:56

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
usy.cctld.us, x.cctld.us, b.cctld.us, n.cctld.us...-
21203.usns2.parkco2.neustar.biz, ns1.parkco2.neustar.biz-

✅ Authoritative Response

Server:3.220.94.231

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for 21203.us (unsigned zone)

⏱️ Timing

Total: 405ms | Queries: -

📄 Records

TypeCountSample Data
A198.94.214.30
NS2ns2.parkco2.neustar.biz, ns1.parkco2.neustar.biz
TXT1v=spf1 -all
SOA1ns1.parkco2.neustar.biz hostmaster.neust

Analysis

IP Addresses

21203.us directs to one IP number, which is 100.58.1.46.

Among the host names that share IP numbers with 21203.us are 19253.us, 56913.us, 68107.us and two others.

Name Servers

21203.us uses two name servers for its delegation: ns1.parkco2.neustar.biz and ns2.parkco2.neustar.biz.

21203.us has the same name server delegation as a number of other domains, such as 69318.us, 68755.us, 00638.us and two more.

At least some of 21203.us's name servers are also used by other domains, among them www.43019.us.

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.