`predmetnik.ru`

DNSSEC	⚠️ Not signed
A	158.160.99.223^{🇷🇺 YandexCloud158.160.0.0/16}
NS	`george.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3ba7^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`george.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c1a7^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`george.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:21a7^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`george.ns.cloudflare.com`
		A	108.162.193.167^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`george.ns.cloudflare.com`
		A	172.64.33.167^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`george.ns.cloudflare.com`
		A	173.245.59.167^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`george.ns.cloudflare.com`
NS	`wanda.ns.cloudflare.com`
		A	2606:4700:50::adf5:3af0^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`wanda.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c0f0^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`wanda.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:20f0^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`wanda.ns.cloudflare.com`
		A	108.162.192.240^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`wanda.ns.cloudflare.com`
		A	172.64.32.240^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`wanda.ns.cloudflare.com`
		A	173.245.58.240^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`wanda.ns.cloudflare.com`
MX	`emx.mail.ru` ⭐
		A	94.100.180.180^{🇷🇺 VK-AS94.100.176.0/20 Moscow region}
			PTR	`emx.mail.ru`
		A	217.69.139.180^{🇷🇺 VK-AS217.69.128.0/20 Moscow region}
			PTR	`emx.mail.ru`
TXT	`mailru-domain: ZToZ4Mw4NBLRloLS`
TXT	`v=spf1 a mx include:spf.smtp.bz redirect=_spf.mail.ru`
SOA	`george.ns.cloudflare.com`dns@cloudflare.com serial=2394822549

`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=4068147

Same first word

predmetnik.ru

DNS History

19 records (4 active, 15 former)

○NSfay.ns.cloudflare.com2015-10-13 → 2016-06-04 · 5 obs

○ 2015-08-09 20:19:22
● 2015-10-13 08:00:32
● 2016-06-04 06:49:40
○ 2018-08-19 11:45:32
○ 2026-03-22 16:02:58

○NSfns1.dnspark.net2015-08-09 → 2015-08-09 · 3 obs

● 2015-08-09 20:19:22
○ 2015-10-13 08:00:32
○ 2026-03-22 16:02:58

○NSfns2.dnspark.net2015-08-09 → 2015-08-09 · 3 obs

● 2015-08-09 20:19:22
○ 2015-10-13 08:00:32
○ 2026-03-22 16:02:58

●NSgeorge.ns.cloudflare.com2018-08-19 → 2026-03-22 · 3 obs

○ 2016-06-04 06:49:40
● 2018-08-19 11:45:32
● 2026-03-22 16:02:58

○NSkanye.ns.cloudflare.com2015-10-13 → 2016-06-04 · 5 obs

○ 2015-08-09 20:19:22
● 2015-10-13 08:00:32
● 2016-06-04 06:49:40
○ 2018-08-19 11:45:32
○ 2026-03-22 16:02:58

●NSwanda.ns.cloudflare.com2018-08-19 → 2026-03-22 · 3 obs

○ 2016-06-04 06:49:40
● 2018-08-19 11:45:32
● 2026-03-22 16:02:58

●MXemx.mail.ru2015-08-09 → 2026-03-22 · 2 obs

● 2015-08-09 20:19:22
● 2026-03-22 16:02:58

○A104.21.77.1642021-05-30 → 2021-05-30 · 4 obs

○ 2018-08-19 11:45:32
● 2021-05-30 14:03:00
○ 2026-02-15 07:18:10
○ 2026-03-22 16:02:58

○A104.27.150.602018-08-19 → 2018-08-19 · 4 obs

○ 2016-06-04 06:49:40
● 2018-08-19 11:45:32
○ 2021-05-30 14:03:00
○ 2026-03-22 16:02:58

○A104.27.151.602018-08-19 → 2018-08-19 · 4 obs

○ 2016-06-04 06:49:40
● 2018-08-19 11:45:32
○ 2021-05-30 14:03:00
○ 2026-03-22 16:02:58

○A104.28.26.752015-10-13 → 2016-06-04 · 5 obs

○ 2015-08-09 20:19:22
● 2015-10-13 08:00:32
● 2016-06-04 06:49:40
○ 2018-08-19 11:45:32
○ 2026-03-22 16:02:58

○A104.28.27.752015-10-13 → 2016-06-04 · 5 obs

○ 2015-08-09 20:19:22
● 2015-10-13 08:00:32
● 2016-06-04 06:49:40
○ 2018-08-19 11:45:32
○ 2026-03-22 16:02:58

●A158.160.99.2232026-02-15 → 2026-03-22 · 3 obs

○ 2021-05-30 14:03:00
● 2026-02-15 07:18:10
● 2026-03-22 16:02:58

○A172.67.209.2442021-05-30 → 2021-05-30 · 4 obs

○ 2018-08-19 11:45:32
● 2021-05-30 14:03:00
○ 2026-02-15 07:18:10
○ 2026-03-22 16:02:58

○A212.118.62.32015-08-09 → 2015-08-09 · 3 obs

● 2015-08-09 20:19:22
○ 2015-10-13 08:00:32
○ 2026-03-22 16:02:58

○A2400:cb00:2048:1::681b:963c2018-08-19 → 2018-08-19 · 4 obs

○ 2016-06-04 06:49:40
● 2018-08-19 11:45:32
○ 2021-05-30 14:03:00
○ 2026-03-22 16:02:58

○A2400:cb00:2048:1::681b:973c2018-08-19 → 2018-08-19 · 4 obs

○ 2016-06-04 06:49:40
● 2018-08-19 11:45:32
○ 2021-05-30 14:03:00
○ 2026-03-22 16:02:58

○A2606:4700:3034::ac43:d1f42021-05-30 → 2021-05-30 · 4 obs

○ 2018-08-19 11:45:32
● 2021-05-30 14:03:00
○ 2026-02-15 07:18:10
○ 2026-03-22 16:02:58

○A2606:4700:3037::6815:4da42021-05-30 → 2021-05-30 · 4 obs

○ 2018-08-19 11:45:32
● 2021-05-30 14:03:00
○ 2026-02-15 07:18:10
○ 2026-03-22 16:02:58

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
ru	a.dns.ripn.net, d.dns.ripn.net, f.dns.ripn.net, b.dns.ripn.net...	-
predmetnik.ru	wanda.ns.cloudflare.com, george.ns.cloudflare.com	-

✅ Authoritative Response

Server: 172.64.32.240

NS records: wanda.ns.cloudflare.com, george.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for predmetnik.ru (unsigned zone)

⏱️ Timing

Total: 662ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`158.160.99.223`
NS	2	`george.ns.cloudflare.com, wanda.ns.cloudflare.com`
MX	1	`emx.mail.ru (pri: 10)`
TXT	2	`mailru-domain: ZToZ4Mw4NBLRloLS, v=spf1 a mx include:spf.smtp.bz redirect`
SOA	1	`george.ns.cloudflare.com dns.cloudflare.`

Analysis

IP Addresses

predmetnik.ru points to a single IP: 158.160.99.223.

Other host names, for instance srv3.1urok.ru, pdou.ru, teacherjournal.ru, pedm.ru and 1urok.ru share IP numbers with predmetnik.ru.

Name Servers

Two name servers george.ns.cloudflare.com and wanda.ns.cloudflare.com handle delegation for predmetnik.ru.

predmetnik.ru uses the same name server setup as other domains, for example povyshenie-kvalifikacii.ru, webandname.com, freedomit.com.au, sizo-medvedkovo.ru and tropik.com.ua.

predmetnik.ru partially shares name servers with other domains; examples include iclfertilizers.com, aakarsoft.com, fallimentisondrio.com, thehad.ca and mikunn.com.

Host names with six IP numbers: george.ns.cloudflare.com points to: 2606:4700:58::adf5:3ba7, 2803:f800:50::6ca2:c1a7, 2a06:98c1:50::ac40:21a7, 108.162.193.167, 172.64.33.167 and 173.245.59.167; wanda.ns.cloudflare.com points to: 2606:4700:50::adf5:3af0, 2803:f800:50::6ca2:c0f0, 2a06:98c1:50::ac40:20f0, 108.162.192.240, 172.64.32.240 and 173.245.58.240.

Mail Servers

predmetnik.ru is handled by a single mail server, emx.mail.ru.

predmetnik.ru has the same mail server setup as other domains, including luis.kz, rachel.su, s-transport.ru, something.ru and bigi.by.

predmetnik.ru shares some mail servers with other domains, for example optguru.ru, baz-auto.ru and www.egps.ru.

Host emx.mail.ru resolves to two IPs: 94.100.180.180 and 217.69.139.180.

predmetnik.ru - robtex.com

predmetnik.ru

ru

Same first word

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

Analysis

IP Addresses

Name Servers

Mail Servers

`predmetnik.ru`

`ru`