21sr.com - dns.ninja

21sr.com

DNSSEC⚠️ Not signed
A103.115.48.155🇨🇳 CLOUDIE-AS-AP103.115.48.0/24
PTRunknown.itsidc.com
NSa3.share-dns.com ⭐ ⚠️ Not in parent delegation
A172.64.53.25🇺🇸 Cloudflare172.64.53.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
NSa.share-dns.com ⚠️ Not in zone NS records
A172.64.53.25🇺🇸 Cloudflare172.64.53.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
NSb.share-dns.net ⚠️ Not in zone NS records
A172.64.52.239🇺🇸 Cloudflare172.64.52.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
NSb3.share-dns.net ⚠️ Not in parent delegation
A172.64.52.239🇺🇸 Cloudflare172.64.52.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
SOAa.share-dns.commaster@share-dns.com serial=1774055658

com

DNSSEC🔒 Signed (DS record present)
NSa.gtld-servers.net ⭐
NSb.gtld-servers.net
NSc.gtld-servers.net
NSd.gtld-servers.net
NSe.gtld-servers.net
NSf.gtld-servers.net
NSg.gtld-servers.net
NSh.gtld-servers.net
NSi.gtld-servers.net
NSj.gtld-servers.net
NSk.gtld-servers.net
NSl.gtld-servers.net
NSm.gtld-servers.net
SOAa.gtld-servers.netnstld@verisign-grs.com serial=1785089402
WOT: SAFE (26/100)

Same first word

21sr.com

Similar names

sr12.com
sr21.de
s12r.de
s2r1.org
rs12.com
rs21.co.uk
12rs.de
12sr.cc
rs21.io
rs21.com
rs21.org.uk
2s1r.cn
sr21.com
2s1r.com
21rs.es
rs21.net
12sr.net
rs21.de
sr21.com.cn
rs21.com.br
12rs.com
sr21.co.jp
rs21.org.br
s12r.net
rs12.ru
2r1s.com
sr21.net
12sr.org
rs12.de
s12r.eu
2rs1.com
12sr.blue

DNS History

17 records (5 active, 12 former)

20162017201820192020202120222023202420252026NSa.share-dns.coma3.share-dns.comb.share-dns.netb3.share-dns.netns27.rookdns.comns28.rookdns.comns37.domaincontrol.comns38.domaincontrol.comns5.dsredirection.comns6.dsredirection.comMXmail.mxproc.commail.replyingback.comA103.115.48.15513.248.213.45141.8.224.169141.8.225.8076.223.67.189
●NSa.share-dns.com2026-06-18 → 2026-07-26 · 3 obs
○ 2026-03-03 18:37:10
● 2026-06-18 12:01:26
● 2026-07-26 18:27:20
●NSa3.share-dns.com2026-06-18 → 2026-07-26 · 3 obs
○ 2026-03-03 18:37:10
● 2026-06-18 12:01:26
● 2026-07-26 18:27:20
●NSb.share-dns.net2026-06-18 → 2026-07-26 · 3 obs
○ 2026-03-03 18:37:10
● 2026-06-18 12:01:26
● 2026-07-26 18:27:20
●NSb3.share-dns.net2026-06-18 → 2026-07-26 · 3 obs
○ 2026-03-03 18:37:10
● 2026-06-18 12:01:26
● 2026-07-26 18:27:20
○NSns27.rookdns.com2016-07-18 → 2016-07-18 · 4 obs
○ 2016-01-29 17:07:06
● 2016-07-18 00:37:38
○ 2026-03-03 18:37:10
○ 2026-07-26 18:27:20
○NSns28.rookdns.com2016-07-18 → 2016-07-18 · 4 obs
○ 2016-01-29 17:07:06
● 2016-07-18 00:37:38
○ 2026-03-03 18:37:10
○ 2026-07-26 18:27:20
○NSns37.domaincontrol.com2026-03-03 → 2026-07-26 · 2 obs
○ 2026-03-03 18:37:10
○ 2026-07-26 18:27:20
○NSns38.domaincontrol.com2026-03-03 → 2026-07-26 · 2 obs
○ 2026-03-03 18:37:10
○ 2026-07-26 18:27:20
○NSns5.dsredirection.com2015-05-14 → 2016-01-29 · 4 obs
● 2015-05-14 21:30:38
● 2016-01-29 17:07:06
○ 2016-07-18 00:37:38
○ 2026-07-26 18:27:20
○NSns6.dsredirection.com2015-05-14 → 2016-01-29 · 4 obs
● 2015-05-14 21:30:38
● 2016-01-29 17:07:06
○ 2016-07-18 00:37:38
○ 2026-07-26 18:27:20
○MXmail.mxproc.com2015-05-14 → 2016-01-29 · 4 obs
● 2015-05-14 21:30:38
● 2016-01-29 17:07:06
○ 2016-07-18 00:37:38
○ 2026-07-26 18:27:20
○MXmail.replyingback.com2016-07-18 → 2016-07-18 · 4 obs
○ 2016-01-29 17:07:06
● 2016-07-18 00:37:38
○ 2026-03-03 18:37:10
○ 2026-07-26 18:27:20
●A103.115.48.1552026-06-18 → 2026-07-26 · 3 obs
○ 2026-03-03 18:37:10
● 2026-06-18 12:01:26
● 2026-07-26 18:27:20
○A13.248.213.452026-03-03 → 2026-07-26 · 2 obs
○ 2026-03-03 18:37:10
○ 2026-07-26 18:27:20
○A141.8.224.1692016-07-18 → 2016-07-18 · 4 obs
○ 2016-01-29 17:07:06
● 2016-07-18 00:37:38
○ 2026-03-03 18:37:10
○ 2026-07-26 18:27:20
○A141.8.225.802015-05-14 → 2016-01-29 · 4 obs
● 2015-05-14 21:30:38
● 2016-01-29 17:07:06
○ 2016-07-18 00:37:38
○ 2026-07-26 18:27:20
○A76.223.67.1892026-03-03 → 2026-07-26 · 2 obs
○ 2026-03-03 18:37:10
○ 2026-07-26 18:27:20

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
comi.gtld-servers.net, g.gtld-servers.net, m.gtld-servers.net, d.gtld-servers.net...-
21sr.comb3.share-dns.net, a3.share-dns.com1 record

✅ Authoritative Response

Server:172.64.52.239

NS records: b3.share-dns.net, a3.share-dns.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for 21sr.com (unsigned zone)

⏱️ Timing

Total: 1857ms | Queries: -

📄 Records

TypeCountSample Data
A1103.115.48.155
NS2a.share-dns.com, b.share-dns.net
SOA1a.share-dns.com master.share-dns.com

📌 Glue Records Collected

Total: 1

Out-of-bailiwick: 1 (a3.share-dns.com)

Analysis

IP Addresses

21sr.com points to a single IP number: 103.115.48.155.

Additional host names — www.sindhu4u.com, tkgnet.com, www.(0x706f726e)ayo.com and two others — share IP numbers with 21sr.com.

Name Servers

21sr.com has four authoritative name servers: a3.share-dns.com, a.share-dns.com, b3.share-dns.net and b.share-dns.net.

The name servers of 21sr.com overlap at least partially with those of other domains — among them tztongji.com, ywtxt.cc, kdjykj.com and two more.

These name servers commonly appear in delegations together with a11.share-dns.com, b11.share-dns.net, a7.share-dns.com and 7 other.

a3.share-dns.com and a.share-dns.com each resolve to 172.64.53.25, while b3.share-dns.net and b.share-dns.net each resolve to 172.64.52.239.

a3.share-dns.com and a.share-dns.com each have 172.64.53.25 IP addresses.

b3.share-dns.net and b.share-dns.net each have 172.64.52.239 IP addresses.