tkcert.su - dns.ninja

`tkcert.su`

DNSSEC	⚠️ Not signed
NS	`kaluga.ens.mail.ru` ⚠️ Not in zone NS records
		A	94.100.180.238^{🇷🇺 VK-AS94.100.176.0/20 Moscow region}
			PTR	`ns1.ens.mail.ru`
NS	`tagil.ens.mail.ru` ⚠️ Not in zone NS records
		A	217.69.139.164^{🇷🇺 VK-AS217.69.128.0/20 Moscow region}
			PTR	`ns2.ens.mail.ru`

`su`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.dns.ripn.net` ⭐
	NS	`b.dns.ripn.net`
	NS	`d.dns.ripn.net`
	NS	`e.dns.ripn.net`
	NS	`f.dns.ripn.net`
	SOA	`a.dns.ripn.net`hostmaster@ripn.net serial=650209608

Same first word

tkcert.su

tkcert.com

Similar names

rktect.com

tkrcet.ac.in

rtktec.com

tectrk.com

trteck.com

tkrcet.com

DNS History

5 records (2 active, 3 former)

●NSkaluga.ens.mail.ru2020-01-14 → 2026-06-25 · 2 obs

● 2020-01-14 07:54:30
● 2026-06-25 20:23:20

●NStagil.ens.mail.ru2020-01-14 → 2026-06-25 · 2 obs

● 2020-01-14 07:54:30
● 2026-06-25 20:23:20

○MXemx.mail.ru2020-01-14 → 2020-01-14 · 2 obs

● 2020-01-14 07:54:30
○ 2026-06-25 20:23:20

○A159.253.22.302026-02-19 → 2026-02-19 · 3 obs

○ 2020-01-14 07:54:30
● 2026-02-19 11:58:36
○ 2026-06-25 20:23:20

○A5.45.121.42020-01-14 → 2020-01-14 · 3 obs

● 2020-01-14 07:54:30
○ 2026-02-19 11:58:36
○ 2026-06-25 20:23:20

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
su	a.dns.ripn.net, b.dns.ripn.net, d.dns.ripn.net, e.dns.ripn.net...	10 records
tkcert.su	tagil.ens.mail.ru, kaluga.ens.mail.ru	-

✅ Authoritative Response

Server:217.69.139.164

NS records: tagil.ens.mail.ru, kaluga.ens.mail.ru

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for tkcert.su (unsigned zone)

⏱️ Timing

Total: 1146ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`159.253.22.30`
NS	2	`kaluga.ens.mail.ru, tagil.ens.mail.ru`
MX	1	`emx.mail.ru (pri: 10)`
TXT	2	`google-site-verification=MXDwxfJSBaQK-ep, v=spf1 redirect=_spf.mail.ru`
SOA	1	`kaluga.ens.mail.ru support.biz.mail.ru`

📌 Glue Records Collected

Total: 10

Out-of-bailiwick: 10 (a.dns.ripn.net, b.dns.ripn.net, d.dns.ripn.net...)

Analysis

Name Servers

tkcert.su is delegated to two name servers: kaluga.ens.mail.ru and tagil.ens.mail.ru.

tkcert.su shares its name server setup with other domains, such as khabriyalov.com and rus-co.ru.

tkcert.su shares at least some of its name servers with other domains, including masters-o.ru, icaad.ru, ukra.ru and two others.

These name servers are frequently seen alongside tambov.ens.mail.ru, orenburg.ens.mail.ru, azov.ens.mail.ru and 7 other name servers.

kaluga.ens.mail.ru and tagil.ens.mail.ru each resolve to one IP number: kaluga.ens.mail.ru points to 94.100.180.238 and tagil.ens.mail.ru points to 217.69.139.164.