s21.in - robtex.com

s21.in

DNSSEC⚠️ Not signed
A2606:4700:3030::6815:55af🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3033::ac43:d0ad🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.85.175Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.208.173🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSart.ns.cloudflare.com ⭐
A2606:4700:58::adf5:3b66🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRart.ns.cloudflare.com
A2803:f800:50::6ca2:c166🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRart.ns.cloudflare.com
A2a06:98c1:50::ac40:2166🇺🇸 Cloudflare2a06:98c1:50::/45
PTRart.ns.cloudflare.com
A108.162.193.102🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRart.ns.cloudflare.com
A172.64.33.102🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRart.ns.cloudflare.com
A173.245.59.102🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRart.ns.cloudflare.com
NSgene.ns.cloudflare.com
A2606:4700:50::adf5:3a9e🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRgene.ns.cloudflare.com
A2803:f800:50::6ca2:c09e🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRgene.ns.cloudflare.com
A2a06:98c1:50::ac40:209e🇺🇸 Cloudflare2a06:98c1:50::/45
PTRgene.ns.cloudflare.com
A108.162.192.158🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRgene.ns.cloudflare.com
A172.64.32.158🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRgene.ns.cloudflare.com
A173.245.58.158🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRgene.ns.cloudflare.com
MXaspmx.l.google.com ⭐
A2607:f8b0:4023:c0b::1a🇺🇸 Google2607:f8b0::/32
PTRdd-in-f26.1e100.net
A142.250.141.27🇺🇸 Google142.250.141.0/24
PTRdd-in-f27.1e100.net
MXalt1.aspmx.l.google.com(5)
A2607:f8b0:4023:2801::1b🇺🇸 Google2607:f8b0::/32
PTRlcausi-in-f27.1e100.net
A192.178.128.26🇺🇸 Google192.178.128.0/24
PTRlcausi-in-f26.1e100.net
MXalt2.aspmx.l.google.com(5)
A2607:f8b0:4023:1015::1b🇺🇸 Google2607:f8b0::/32
PTRyudfwta-in-f27.1e100.net
A172.253.135.27🇺🇸 Google172.253.135.0/24
PTRyudfwta-in-f27.1e100.net
MXaspmx2.googlemail.com(10)
A2a00:1450:4025:402::1a🇳🇱 Google2a00:1450:4025::/48
PTRrb-in-f26.1e100.net
A142.250.102.27🇺🇸 Google142.250.102.0/24
PTRrb-in-f27.1e100.net
MXaspmx3.googlemail.com(10)
A2607:f8b0:4023:1015::1a🇺🇸 Google2607:f8b0::/32
PTRyudfwta-in-f26.1e100.net
A172.253.135.26🇺🇸 Google172.253.135.0/24
PTRyudfwta-in-f26.1e100.net
TXTgoogle-site-verification=sYyB6Vu1Rd8UoFsN2AyYWWdHesKT6OYfY5JhNZCixgY
TXTv=spf1 include:_spf.google.com ~all
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4104.21.85.175, 172.67.208.173
IPv62606:4700:3030::6815:55af, 2606:4700:3033::ac43:d0ad
SOAart.ns.cloudflare.comdns@cloudflare.com serial=2398454724

in

DNSSEC🔒 Signed (DS record present)
NSns01.trs-dns.com ⭐
NSns.trs-dns.com
NSns01.trs-dns.net
NSns10.trs-dns.info
NSns10.trs-dns.org
SOAns.trs-dns.comtrs-ops@tucows.com serial=1774826459

Same first word

s21.de
s21.eu
s21.cc
s21.mobi
s21.co.jp
s21.net
s21.info
s21.pl
s21.ru
s21.com.gt
s21.gt
s21.com
s21.com.br
s21.com.au
s21.in
s21.us
s21.com.cn
s21.cz
s21.dk
s21.es
s21.it

Similar names

1s2.de
12s.vn
21s.org
s12.pp.ua
s12.com
12s.in
s12.net
21s.cc
21s.pl
s12.shop
2s1.org
1s2.com
1s2.co.uk
s12.in
s12.de
s12.org.ua
s12.ro
12s.eu
s12.si
s12.hu
2s1.pl
21s.fr
s12.ax
21s.eu
12s.com.br
s12.ca
12s.net
21s.me
s12.pl
21s.cn
21s.ru
12s.gov.cn
1s2.org
1s2.at
2s1.net
s12.at
21s.net
s12.com.br
2s1.cn
12s.nl
21s.mobi
12s.de
s12.mobi
2s1.at
12s.org
s12.eu
s12.cn
12s.co.uk
s12.gmbh
1s2.in
12s.com
21s.de
1s2.net
s12.com.co
s12.nl
12s.ch
s12.no
s12.co
s12.cz
21s.com

DNS History

18 records (11 active, 7 former)

20162017201820192020202120222023202420252026NSart.ns.cloudflare.comgene.ns.cloudflare.comara.ns.cloudflare.comdns19.parkpage.foundationapi.comdns20.parkpage.foundationapi.comigor.ns.cloudflare.comMXalt1.aspmx.l.google.comalt2.aspmx.l.google.comaspmx.l.google.comaspmx2.googlemail.comaspmx3.googlemail.comA104.21.85.175172.67.208.1732606:4700:3030::6815:55af2606:4700:3033::ac43:d0ad104.18.40.37104.18.41.37209.99.40.227
○NSara.ns.cloudflare.com2015-12-09 → 2015-12-09 · 4 obs
○ 2015-09-18 14:48:36
● 2015-12-09 00:03:06
○ 2017-05-28 06:09:34
○ 2026-03-29 23:42:10
●NSart.ns.cloudflare.com2026-03-27 → 2026-03-29 · 3 obs
○ 2017-05-28 06:09:34
● 2026-03-27 15:30:12
● 2026-03-29 23:42:10
○NSdns19.parkpage.foundationapi.com2015-08-24 → 2015-09-18 · 4 obs
● 2015-08-24 05:26:32
● 2015-09-18 14:48:36
○ 2015-12-09 00:03:06
○ 2026-03-29 23:42:10
○NSdns20.parkpage.foundationapi.com2015-08-24 → 2015-09-18 · 4 obs
● 2015-08-24 05:26:32
● 2015-09-18 14:48:36
○ 2015-12-09 00:03:06
○ 2026-03-29 23:42:10
●NSgene.ns.cloudflare.com2026-03-27 → 2026-03-29 · 3 obs
○ 2017-05-28 06:09:34
● 2026-03-27 15:30:12
● 2026-03-29 23:42:10
○NSigor.ns.cloudflare.com2015-12-09 → 2015-12-09 · 4 obs
○ 2015-09-18 14:48:36
● 2015-12-09 00:03:06
○ 2017-05-28 06:09:34
○ 2026-03-29 23:42:10
●MXalt1.aspmx.l.google.com2026-03-27 → 2026-03-29 · 2 obs
● 2026-03-27 15:30:12
● 2026-03-29 23:42:10
●MXalt2.aspmx.l.google.com2026-03-27 → 2026-03-29 · 2 obs
● 2026-03-27 15:30:12
● 2026-03-29 23:42:10
●MXaspmx.l.google.com2026-03-27 → 2026-03-29 · 2 obs
● 2026-03-27 15:30:12
● 2026-03-29 23:42:10
●MXaspmx2.googlemail.com2026-03-27 → 2026-03-29 · 2 obs
● 2026-03-27 15:30:12
● 2026-03-29 23:42:10
●MXaspmx3.googlemail.com2026-03-27 → 2026-03-29 · 2 obs
● 2026-03-27 15:30:12
● 2026-03-29 23:42:10
○A104.18.40.372015-12-09 → 2015-12-09 · 4 obs
○ 2015-09-18 14:48:36
● 2015-12-09 00:03:06
○ 2017-05-28 06:09:34
○ 2026-03-29 23:42:10
○A104.18.41.372015-12-09 → 2015-12-09 · 4 obs
○ 2015-09-18 14:48:36
● 2015-12-09 00:03:06
○ 2017-05-28 06:09:34
○ 2026-03-29 23:42:10
●A104.21.85.1752026-03-27 → 2026-03-29 · 3 obs
○ 2017-05-28 06:09:34
● 2026-03-27 15:30:12
● 2026-03-29 23:42:10
●A172.67.208.1732026-03-27 → 2026-03-29 · 3 obs
○ 2017-05-28 06:09:34
● 2026-03-27 15:30:12
● 2026-03-29 23:42:10
○A209.99.40.2272015-08-24 → 2015-09-18 · 4 obs
● 2015-08-24 05:26:32
● 2015-09-18 14:48:36
○ 2015-12-09 00:03:06
○ 2026-03-29 23:42:10
●A2606:4700:3030::6815:55af2026-03-27 → 2026-03-29 · 3 obs
○ 2017-05-28 06:09:34
● 2026-03-27 15:30:12
● 2026-03-29 23:42:10
●A2606:4700:3033::ac43:d0ad2026-03-27 → 2026-03-29 · 3 obs
○ 2017-05-28 06:09:34
● 2026-03-27 15:30:12
● 2026-03-29 23:42:10

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
inns10.trs-dns.org, ns01.trs-dns.com, ns10.trs-dns.info, ns01.trs-dns.net8 records
s21.inart.ns.cloudflare.com, gene.ns.cloudflare.com-

✅ Authoritative Response

Server:173.245.59.102

NS records: art.ns.cloudflare.com, gene.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for s21.in (unsigned zone)

⏱️ Timing

Total: 694ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.208.173, 104.21.85.175
AAAA22606:4700:3030::6815:55af, 2606:4700:3033::ac43:d0ad
NS2art.ns.cloudflare.com, gene.ns.cloudflare.com
MX5aspmx.l.google.com (pri: 1), aspmx2.googlemail.com (pri: 10)...
TXT2google-site-verification=sYyB6Vu1Rd8UoFs, v=spf1 include:_spf.google.com ~all
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1art.ns.cloudflare.com dns.cloudflare.com

📌 Glue Records Collected

Total: 8

Out-of-bailiwick: 8 (ns10.trs-dns.org, ns10.trs-dns.org, ns01.trs-dns.com...)

Analysis

IP Addresses

s21.in resolves to four IP numbers: 2606:4700:3030::6815:55af, 2606:4700:3033::ac43:d0ad, 104.21.85.175 and 172.67.208.173.

other host names for instance napesolus.cc, www.junkybooks.com, perikiz.com, pcyxmm.com and 168wuliu.cn share IP numbers with s21.in.

Name Servers

s21.in is delegated to two name servers: art.ns.cloudflare.com and gene.ns.cloudflare.com.

s21.in shares the same name server setup as other domains, for example onion-net.com.tw, asm-cs.com, pocitniske-hise.com, prd00.iedu.ballys.tech and iptvbee.com.

s21.in at least partially shares name servers with other domains, for instance chafnan.com, sepitajima.com, wishlistproducts.com, shanna.hk and matriz.com.uy.

These name servers are often used with coco.ns.cloudflare.com and ian.ns.cloudflare.com.

Host names with six IP numbers:

art.ns.cloudflare.com points to: 2606:4700:58::adf5:3b66, 2803:f800:50::6ca2:c166, 2a06:98c1:50::ac40:2166, 108.162.193.102, 172.64.33.102 and 173.245.59.102; gene.ns.cloudflare.com points to: 2606:4700:50::adf5:3a9e, 2803:f800:50::6ca2:c09e, 2a06:98c1:50::ac40:209e, 108.162.192.158, 172.64.32.158 and 173.245.58.158.

Mail Servers

s21.in is handled by five mail servers: aspmx2.googlemail.com, aspmx3.googlemail.com, aspmx.l.google.com, alt1.aspmx.l.google.com and alt2.aspmx.l.google.com.

s21.in shares mail servers with other domains at least partially, including isaskmortgage.ca, ns500821.ns500794.ns500794.ns500794.ns500795.ns500794.ns500795.ns500794.ns500821.ns500795.ns500794.ns500795.lustypartnersfinder.com, basement.io, tobyfairchild.com and ns500693.ns500734.ns500734.ns500693.ns500693.ns500699.ns500699.ns500693.ns500734.ns500699.ns500588.ns500699.ns500588.ns500693.ns500588.ns500588.dtrkdll.com.

these mail servers are often used with the mail servers alt3.aspmx.l.google.com, alt4.aspmx.l.google.com, aspmx5.googlemail.com and aspmx4.googlemail.com.

Hosts with two IP numbers:

aspmx2.googlemail.com points to 2a00:1450:4025:402::1a and 142.250.102.27.

aspmx3.googlemail.com points to 2607:f8b0:4023:1015::1a and 172.253.135.26.

aspmx.l.google.com points to 2607:f8b0:4023:c0b::1a and 142.250.141.27.

alt1.aspmx.l.google.com points to 2607:f8b0:4023:2801::1b and 192.178.128.26.

alt2.aspmx.l.google.com points to 2607:f8b0:4023:1015::1b and 172.253.135.27.