21501.cn - robtex.com

21501.cn

DNSSEC⚠️ Not signed
A137.220.227.94🇯🇵 CTGSERVERLIMITED-AS-AP137.220.128.0/17 RACKIP CONSULTANCY PTE. LTD. No. 3, Pemimpin Drive, 07-04 Lip Hing, Industrial Building,
NSgrannbo.ns.cloudflare.com ⭐
A2606:4700:50::a29f:2696🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRgrannbo.ns.cloudflare.com
A2803:f800:50::6ca2:c296🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRgrannbo.ns.cloudflare.com
A2a06:98c1:50::ac40:2296🇺🇸 Cloudflare2a06:98c1:50::/45
PTRgrannbo.ns.cloudflare.com
A108.162.194.150🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRgrannbo.ns.cloudflare.com
A162.159.38.150Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRgrannbo.ns.cloudflare.com
A172.64.34.150🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRgrannbo.ns.cloudflare.com
NSnorm.ns.cloudflare.com
A2606:4700:58::adf5:3b86🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRnorm.ns.cloudflare.com
A2803:f800:50::6ca2:c186🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRnorm.ns.cloudflare.com
A2a06:98c1:50::ac40:2186🇺🇸 Cloudflare2a06:98c1:50::/45
PTRnorm.ns.cloudflare.com
A108.162.193.134🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRnorm.ns.cloudflare.com
A172.64.33.134🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRnorm.ns.cloudflare.com
A173.245.59.134🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRnorm.ns.cloudflare.com
SOAgrannbo.ns.cloudflare.comdns@cloudflare.com serial=2409278347

cn

DNSSEC🔒 Signed (DS record present)
NSa.dns.cn ⭐
NSb.dns.cn
NSc.dns.cn
NSd.dns.cn
NSe.dns.cn
NSns.cernet.net ⚠️ Not in parent delegation
SOAa.dns.cnroot@cnnic.cn serial=2035098120

Same first word

21501.us
21501.com
21501.cn
21501.net

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11250.cfd
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01512.us
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10125.us
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11052.com
15102.us
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52011.app

DNS History

19 records (3 active, 16 former)

20162017201820192020202120222023202420252026NSgrannbo.ns.cloudflare.comnorm.ns.cloudflare.comdns1.iidns.comdns2.iidns.comdns3.iidns.comdns4.iidns.comdns5.iidns.comdns6.iidns.comA137.220.227.94104.160.182.132104.160.182.134198.148.92.53198.148.92.56198.148.92.57198.148.92.58198.148.92.6223.234.4.15123.234.4.153CNAMEfw.ename.net
○NSdns1.iidns.com2015-07-26 → 2017-04-19 · 4 obs
● 2015-07-26 10:44:30
● 2017-04-19 01:37:42
○ 2026-07-09 19:50:22
○ 2026-07-27 22:06:16
○NSdns2.iidns.com2015-07-26 → 2016-09-24 · 4 obs
● 2015-07-26 10:44:30
● 2016-09-24 22:43:36
○ 2017-04-19 01:37:42
○ 2026-07-27 22:06:16
○NSdns3.iidns.com2015-07-26 → 2016-09-24 · 4 obs
● 2015-07-26 10:44:30
● 2016-09-24 22:43:36
○ 2017-04-19 01:37:42
○ 2026-07-27 22:06:16
○NSdns4.iidns.com2015-07-26 → 2016-09-24 · 4 obs
● 2015-07-26 10:44:30
● 2016-09-24 22:43:36
○ 2017-04-19 01:37:42
○ 2026-07-27 22:06:16
○NSdns5.iidns.com2015-07-26 → 2016-09-24 · 4 obs
● 2015-07-26 10:44:30
● 2016-09-24 22:43:36
○ 2017-04-19 01:37:42
○ 2026-07-27 22:06:16
○NSdns6.iidns.com2015-07-26 → 2016-09-24 · 4 obs
● 2015-07-26 10:44:30
● 2016-09-24 22:43:36
○ 2017-04-19 01:37:42
○ 2026-07-27 22:06:16
●NSgrannbo.ns.cloudflare.com2026-07-09 → 2026-07-27 · 3 obs
○ 2017-04-19 01:37:42
● 2026-07-09 19:50:22
● 2026-07-27 22:06:16
●NSnorm.ns.cloudflare.com2026-07-09 → 2026-07-27 · 3 obs
○ 2017-04-19 01:37:42
● 2026-07-09 19:50:22
● 2026-07-27 22:06:16
○A104.160.182.1322016-09-24 → 2016-09-24 · 4 obs
○ 2016-02-23 03:00:30
● 2016-09-24 22:43:36
○ 2017-04-19 01:37:42
○ 2026-07-27 22:06:16
○A104.160.182.1342016-09-24 → 2016-09-24 · 4 obs
○ 2016-02-23 03:00:30
● 2016-09-24 22:43:36
○ 2017-04-19 01:37:42
○ 2026-07-27 22:06:16
●A137.220.227.942026-07-09 → 2026-07-27 · 3 obs
○ 2017-04-19 01:37:42
● 2026-07-09 19:50:22
● 2026-07-27 22:06:16
○A198.148.92.532015-07-26 → 2015-07-26 · 3 obs
● 2015-07-26 10:44:30
○ 2026-07-09 19:50:22
○ 2026-07-27 22:06:16
○A198.148.92.562015-07-26 → 2016-02-23 · 4 obs
● 2015-07-26 10:44:30
● 2016-02-23 03:00:30
○ 2016-09-24 22:43:36
○ 2026-07-27 22:06:16
○A198.148.92.572016-02-23 → 2016-02-23 · 4 obs
○ 2015-07-26 10:44:30
● 2016-02-23 03:00:30
○ 2016-09-24 22:43:36
○ 2026-07-27 22:06:16
○A198.148.92.582015-07-26 → 2016-02-23 · 4 obs
● 2015-07-26 10:44:30
● 2016-02-23 03:00:30
○ 2016-09-24 22:43:36
○ 2026-07-27 22:06:16
○A198.148.92.622015-07-26 → 2015-07-26 · 3 obs
● 2015-07-26 10:44:30
○ 2026-07-09 19:50:22
○ 2026-07-27 22:06:16
○A23.234.4.1512017-04-19 → 2017-04-19 · 4 obs
○ 2016-09-24 22:43:36
● 2017-04-19 01:37:42
○ 2026-07-09 19:50:22
○ 2026-07-27 22:06:16
○A23.234.4.1532017-04-19 → 2017-04-19 · 4 obs
○ 2016-09-24 22:43:36
● 2017-04-19 01:37:42
○ 2026-07-09 19:50:22
○ 2026-07-27 22:06:16
○CNAMEfw.ename.net2015-07-26 → 2017-04-19 · 6 obs
● 2015-07-26 10:44:30
○ 2016-01-18 15:19:14
● 2016-02-23 03:00:30
● 2017-04-19 01:37:42
○ 2026-07-09 19:50:22
○ 2026-07-27 22:06:16

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
cna.dns.cn, b.dns.cn, c.dns.cn, d.dns.cn...-
21501.cnnorm.ns.cloudflare.com, grannbo.ns.cloudflare.com-

✅ Authoritative Response

Server:108.162.193.134

NS records: norm.ns.cloudflare.com, grannbo.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for 21501.cn (unsigned zone)

⏱️ Timing

Total: 810ms | Queries: -

📄 Records

TypeCountSample Data
A1137.220.227.94
NS2grannbo.ns.cloudflare.com, norm.ns.cloudflare.com
SOA1grannbo.ns.cloudflare.com dns.cloudflare

Analysis

IP Addresses

21501.cn has exactly one IP address — 137.220.227.94.

90348.club, 47035.app, gxafr.cc plus two other host names have IP numbers in common with 21501.cn.

Name Servers

Two name servers handle the delegation for 21501.cn: grannbo.ns.cloudflare.com and norm.ns.cloudflare.com.

The name server configuration of 21501.cn is shared with other domains, for instance 084136.com, 28650.cn, 50848.vip and two others.

21501.cn has at least partial name server overlap with other domains, such as drhaowang.com, padovagoal.it, thewebshop.com and two others.

These name servers tend to appear together with the name servers lady.ns.cloudflare.com, dexter.ns.cloudflare.com and sonny.ns.cloudflare.com.

Hosts with 6 IP addresses each:

grannbo.ns.cloudflare.com resolves to 108.162.194.150, 162.159.38.150 and 172.64.34.150 among others, with 3 other IP addresses in total.

norm.ns.cloudflare.com resolves to 108.162.193.134, 172.64.33.134 and 173.245.59.134 among others, with 3 other IP addresses in total.