`school39samara.ru`

DNSSEC	⚠️ Not signed
A	178.237.201.246^{🇷🇺 CPOSO-AS178.237.201.0/24}
		PTR	`vh-node-2.smrhost.ru`
NS	`ns1.cposo.ru` ⭐
		A	2a04:7e00:1::105^{🇷🇺 AS229272000::/3}
			PTR	`ns1.cposo.ru`
		A	178.237.207.105^{🇷🇺 CPOSO-AS178.237.207.0/24}
			PTR	`ns1.cposo.ru`
NS	`ns2.cposo.ru`
		A	2a04:7e00::105^{🇷🇺 CPOSO-AS2a04:7e00::/48}
		A	178.237.201.105^{🇷🇺 CPOSO-AS178.237.201.0/24}
MX	`mail.school39samara.ru` ⭐
		A	178.237.201.246^{🇷🇺 CPOSO-AS178.237.201.0/24}
			PTR	`vh-node-2.smrhost.ru`
TXT	`v=spf1 ip4:178.237.201.245 ip4:178.237.201.246 ip4:178.237.201.247 a mx ~all`
SOA	`ns1.cposo.ru`dns@cposo.ru 2021-11-22 #20

`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=4068511

Subdomains

mail.school39samara.ru

Same first word

school39samara.ru

DNS History

13 records (4 active, 9 former)

○NSns1.beget.com2020-01-27 → 2020-01-27 · 3 obs

● 2020-01-27 16:01:28
○ 2026-03-12 11:15:28
○ 2026-04-14 11:32:02

○NSns1.beget.pro2020-01-27 → 2020-01-27 · 3 obs

● 2020-01-27 16:01:28
○ 2026-03-12 11:15:28
○ 2026-04-14 11:32:02

○NSns1.beget.ru2020-01-27 → 2020-01-27 · 3 obs

● 2020-01-27 16:01:28
○ 2026-03-12 11:15:28
○ 2026-04-14 11:32:02

●NSns1.cposo.ru2026-03-12 → 2026-04-14 · 3 obs

○ 2020-01-27 16:01:28
● 2026-03-12 11:15:28
● 2026-04-14 11:32:02

○NSns2.beget.com2020-01-27 → 2020-01-27 · 3 obs

● 2020-01-27 16:01:28
○ 2026-03-12 11:15:28
○ 2026-04-14 11:32:02

○NSns2.beget.pro2020-01-27 → 2020-01-27 · 3 obs

● 2020-01-27 16:01:28
○ 2026-03-12 11:15:28
○ 2026-04-14 11:32:02

○NSns2.beget.ru2020-01-27 → 2020-01-27 · 3 obs

● 2020-01-27 16:01:28
○ 2026-03-12 11:15:28
○ 2026-04-14 11:32:02

●NSns2.cposo.ru2026-03-12 → 2026-04-14 · 3 obs

○ 2020-01-27 16:01:28
● 2026-03-12 11:15:28
● 2026-04-14 11:32:02

●MXmail.school39samara.ru2026-03-12 → 2026-04-14 · 3 obs

○ 2020-01-27 16:01:28
● 2026-03-12 11:15:28
● 2026-04-14 11:32:02

○MXmx1.beget.com2020-01-27 → 2020-01-27 · 3 obs

● 2020-01-27 16:01:28
○ 2026-03-12 11:15:28
○ 2026-04-14 11:32:02

○MXmx2.beget.com2020-01-27 → 2020-01-27 · 3 obs

● 2020-01-27 16:01:28
○ 2026-03-12 11:15:28
○ 2026-04-14 11:32:02

●A178.237.201.2462026-03-12 → 2026-04-14 · 3 obs

○ 2020-01-27 16:01:28
● 2026-03-12 11:15:28
● 2026-04-14 11:32:02

○A87.236.19.502020-01-27 → 2020-01-27 · 3 obs

● 2020-01-27 16:01:28
○ 2026-03-12 11:15:28
○ 2026-04-14 11:32:02

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
ru	f.dns.ripn.net, e.dns.ripn.net, b.dns.ripn.net, d.dns.ripn.net...	-
school39samara.ru	ns1.cposo.ru, ns2.cposo.ru	2 records

✅ Authoritative Response

Server:178.237.207.105

NS records: ns1.cposo.ru, ns2.cposo.ru

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for school39samara.ru (unsigned zone)

⏱️ Timing

Total: 1114ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`178.237.201.246`
NS	2	`ns2.cposo.ru, ns1.cposo.ru`
MX	2	`mail.school39samara.ru (pri: 10), mail.school39samara.ru (pri: 20)`
TXT	1	`v=spf1 ip4:178.237.201.245 ip4:178.237.2`
SOA	1	`ns1.cposo.ru dns.cposo.ru`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns1.cposo.ru, ns2.cposo.ru)

Analysis

Hierarchy

The parent of mail.school39samara.ru is school39samara.ru.

IP Addresses

school39samara.ru points to a single IP address: 178.237.201.246.

Other host names such as school79-samara.ru, spetsschool.minobr63.ru, mail.school79-samara.ru, mdou1krupski.ru and mail.suhodolschool1.ru share IPs with school39samara.ru.

Name Servers

Two name servers ns1.cposo.ru and ns2.cposo.ru handle the delegation for school39samara.ru.

school39samara.ru shares the same name server setup as other domains, for example mostysoch.minobr63.ru, 207.237.178.in-addr.arpa, school79-samara.ru, spetsschool.minobr63.ru and xn----8sbfcggsoj3ab5bmb7mob.xn--p1ai.

school39samara.ru at least partially shares name servers with other domains, for example shkola3-chp.ru, samaraschool13.ru, phvcollege.ru, xn----otbmjq2a.xn--p1ai and jumuro.ru.

these name servers commonly pair with ns3.cposo.ru, ns4.cposo.ru, ns1.jumuro.net and ns2.jumuro.net.

Host names with two IP numbers:

ns1.cposo.ru points to 2a04:7e00:1::105 and 178.237.207.105.

ns2.cposo.ru points to 2a04:7e00::105 and 178.237.201.105.

Mail Servers

The mail.school39samara.ru mail server handles school39samara.ru.

mail.school39samara.ru points to a single IP number: 178.237.201.246.

school39samara.ru - robtex.com