`classk.ru`

DNSSEC	⚠️ Not signed
A	91.201.52.158^{🇷🇺 INTERNET-PRO-AS91.201.52.0/24}
		PTR	`h63.netangels.ru`
NS	`ns1.netangels.ru` ⭐
		A	91.201.54.2^{🇷🇺 INTERNET-PRO-AS91.201.54.0/23 NetAngels.RU network in Yekaterinburg}
			PTR	`ns1.netangels.ru`
NS	`ns2.netangels.ru`
		A	91.201.52.2^{🇷🇺 INTERNET-PRO-AS91.201.52.0/24}
			PTR	`ns2.netangels.ru`
NS	`ns3.netangels.ru`
		A	45.86.39.2^{🇷🇺 INTERNET-PRO-AS45.86.39.0/24}
NS	`ns4.netangels.ru`
		A	80.87.101.2^{🇷🇺 INTERNET-PRO-AS80.87.101.0/24}
SOA	`ns1.netangels.ru`hostmaster@netangels.ru serial=1770846802

`ru`

	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=4068301

Subdomains

www.classk.ru

Same first word

classk.ru

classk.com

Similar names

sslack.com

clkass.com

cklass.com.mx

slacks.org

cklass.info

kclass.org

slacks.com.br

slacks.co

slacks.co.in

slacks.it

cklass.net

cklass.us

slacks.de

slacks.ru

kclass.ru

slacks.net

slacks.us

slacks.com

clasks.com

kclass.in

kclass.de

cklass.ca

sasclk.com

slacks.com.au

sklcsa.org

cklass.com

kclass.com

DNS History

9 records (5 active, 4 former)

●NSns1.netangels.ru2015-08-03 → 2026-03-28 · 2 obs

● 2015-08-03 21:28:16
● 2026-03-28 02:47:54

●NSns2.netangels.ru2015-08-03 → 2026-03-28 · 2 obs

● 2015-08-03 21:28:16
● 2026-03-28 02:47:54

●NSns3.netangels.ru2017-03-17 → 2026-03-28 · 3 obs

○ 2015-08-03 21:28:16
● 2017-03-17 03:53:02
● 2026-03-28 02:47:54

●NSns4.netangels.ru2017-03-17 → 2026-03-28 · 3 obs

○ 2015-08-03 21:28:16
● 2017-03-17 03:53:02
● 2026-03-28 02:47:54

○MXmx0.classk.ru2015-08-03 → 2017-03-17 · 4 obs

● 2015-08-03 21:28:16
● 2017-03-17 03:53:02
○ 2026-03-27 12:16:40
○ 2026-03-28 02:47:54

○MXmx1.classk.ru2015-08-03 → 2017-03-17 · 4 obs

● 2015-08-03 21:28:16
● 2017-03-17 03:53:02
○ 2026-03-27 12:16:40
○ 2026-03-28 02:47:54

○A185.93.108.1252016-05-07 → 2017-03-17 · 5 obs

○ 2016-02-04 20:18:32
● 2016-05-07 00:04:52
● 2017-03-17 03:53:02
○ 2026-03-27 12:16:40
○ 2026-03-28 02:47:54

○A91.201.52.1252015-08-03 → 2016-02-04 · 4 obs

● 2015-08-03 21:28:16
● 2016-02-04 20:18:32
○ 2016-05-07 00:04:52
○ 2026-03-28 02:47:54

●A91.201.52.1582026-03-27 → 2026-03-28 · 3 obs

○ 2017-03-17 03:53:02
● 2026-03-27 12:16:40
● 2026-03-28 02:47:54

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
ru	d.dns.ripn.net, e.dns.ripn.net, a.dns.ripn.net, b.dns.ripn.net...	-
classk.ru	ns1.netangels.ru, ns2.netangels.ru, ns3.netangels.ru, ns4.netangels.ru	4 records

✅ Authoritative Response

Server:91.201.54.2

NS records: ns1.netangels.ru, ns2.netangels.ru, ns3.netangels.ru, ns4.netangels.ru

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for classk.ru (unsigned zone)

⏱️ Timing

Total: 1004ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`91.201.52.158`
NS	4	`ns1.netangels.ru, ns2.netangels.ru...`
SOA	1	`ns1.netangels.ru hostmaster.netangels.ru`

📌 Glue Records Collected

Total: 4

Out-of-bailiwick: 4 (ns1.netangels.ru, ns2.netangels.ru, ns3.netangels.ru...)

Analysis

Hierarchy

The parent of www.classk.ru is classk.ru.

IP Addresses

classk.ru points to a single IP address: 91.201.52.158.

Other host names such as avia-cosmos.ru, marushka.ru, atach.ru, oboiburg.ru and brickus.ru share IPs with classk.ru.

Name Servers

classk.ru is delegated to four name servers: ns1.netangels.ru, ns2.netangels.ru, ns3.netangels.ru and ns4.netangels.ru.

classk.ru at least partially shares name servers with other domains, for example vm-663aea82.na4u.ru, rockstories.ru, partstruck.ru, tural.ru and znamja.com.

Host names with one IP number:

ns1.netangels.ru points to: 91.201.54.2

ns2.netangels.ru points to: 91.201.52.2

ns3.netangels.ru points to: 45.86.39.2

ns4.netangels.ru points to: 80.87.101.2

classk.ru - robtex.com

classk.ru

ru