DNS Record Lookup

Look up DNS records including A, AAAA, MX, NS, SOA, CNAME, TXT, and CAA records for any domain

21-school.ru

DNS Records

WhoisRDAPDNS RecordsCertificateUptimeDiagnosticsHistoryHide Contact Info

Hosting & Network

21-school.ru runs on AS201706, with email via Yandex.

Hosting network
AS201706AS201706
Managed DNS
Self-hosted / other
Email
Yandex
IPv6 (AAAA)
Not enabled
CAA pinning
None

Sits alongside 2,270 other sites on AS201706. Stable here since we started watching (Oct 23, 2026).

The apex and www are the same hosting — the apex via A records, www via a CNAME to 21-school.ru.

DNS Records for 21-school.ru

HostnameTypeTTLPriorityContent
21-school.ruMX010mx.yandex.net
21-school.ruSOA20ns1.21-school.ru admin.21-school.ru 2026102601 30 300 86400 20
21-school.ruA091.221.165.183
21-school.ruNS0ns3.21-school.ru
21-school.ruNS0ns1.21-school.ru
21-school.ruNS0ns2.21-school.ru
21-school.ruTXT0google-site-verification=TJOfk6Jabb0TAuia_Rxfca2_FdlYs0fKpoMs83VqHCo
21-school.ruTXT0google-site-verification=TqBACIQwbtLIpKvjE0uyc7nT0sqU15VjUTDR5D2H_60
21-school.ruTXT0v=spf1 ip4:185.179.81.214 ip4:178.170.194.102 ip4:178.170.196.255 include:_spf.yandex.net +a +mx include:_spf.dashasender.ru -all
21-school.ruTXT0google-site-verification=JHNnaJa1P6kPQQHhUqwgrDxmnJ4oarN29Ywol_hIfJk
21-school.ruTXT0google-site-verification=WQnzG6gch71cpe4kETdQeECCnEe6RpoZTdQaXbZS8-k
21-school.ruTXT0google-site-verification=cVo9jmT56K5it8lvS4ebQnuZc3BTjbfv3abXIiLKRe0
21-school.ruTXT0globalsign-domain-verification=S7gbLgI08Phc3FmjdhoUk19RUNw9rRKaLRvY9v1cpk
21-school.ruTXT0mailru-verification: 0e9f96ce19a2fe0e
21-school.ruTXT0yandex-verification: 887ee2c63c391368
www.21-school.ruNS0ns2.21-school.ru
www.21-school.ruNS0ns3.21-school.ru
www.21-school.ruNS0ns1.21-school.ru
www.21-school.ruCNAME021-school.ru
www.21-school.ruMX010mx.yandex.net
www.21-school.ruTXT0google-site-verification=JHNnaJa1P6kPQQHhUqwgrDxmnJ4oarN29Ywol_hIfJk
www.21-school.ruTXT0yandex-verification: 887ee2c63c391368
www.21-school.ruTXT0globalsign-domain-verification=S7gbLgI08Phc3FmjdhoUk19RUNw9rRKaLRvY9v1cpk
www.21-school.ruTXT0google-site-verification=TqBACIQwbtLIpKvjE0uyc7nT0sqU15VjUTDR5D2H_60
www.21-school.ruTXT0v=spf1 ip4:185.179.81.214 ip4:178.170.194.102 ip4:178.170.196.255 include:_spf.yandex.net +a +mx include:_spf.dashasender.ru -all
www.21-school.ruTXT0google-site-verification=cVo9jmT56K5it8lvS4ebQnuZc3BTjbfv3abXIiLKRe0
www.21-school.ruTXT0mailru-verification: 0e9f96ce19a2fe0e
www.21-school.ruTXT0google-site-verification=TJOfk6Jabb0TAuia_Rxfca2_FdlYs0fKpoMs83VqHCo
www.21-school.ruTXT0google-site-verification=WQnzG6gch71cpe4kETdQeECCnEe6RpoZTdQaXbZS8-k
www.21-school.ruSOA20ns1.21-school.ru admin.21-school.ru 2026102601 30 300 86400 20
www.21-school.ruA091.221.165.183

Get alerted the moment 21-school.ru's DNS changes

This page is today's snapshot. Turn on monitoring and we'll watch 21-school.ru continuously, notifying you the moment anything moves across all three signals:

DNS monitor showing the hosting provider, current A, MX, NS, and TXT records, and a history of MX and TXT changes

Uptime

We visit the site from multiple regions worldwide and email you within minutes if it goes down, with a per-region breakdown so a real outage stands out from a regional blip.

DNS changes

We watch NS, MX, CAA, CNAME, TXT and A/AAAA records, and identify the host, network, and ASN behind them, so a real migration or hijack stands out from routine noise.

TLS certificate

We warn you 30, 14, 7, and 1 days before it expires, and flag it if the issuing authority changes or the certificate is unexpectedly replaced.

Monitor DNS free

Free for your first domain: uptime, DNS, and certificate together. No credit card.

What's up with DNS →

Our daily roundup of the most interesting DNS changes across the web — hosting and CDN migrations, network moves, and security-config shifts.

Ask about 21-school.ru

Beta

Answers use the live DNS records shown on this page. AI-generated — double-check anything important.

About DNS Records

DNS (Domain Name System) records are instructions that provide information about a domain, including its IP addresses, mail servers, and other services. Common record types include:

  • SOA (Start of Authority) - Contains administrative information about the zone
  • NS (Nameserver) - Specifies authoritative nameservers for the domain
  • A (Address) - Maps a domain to an IPv4 address
  • AAAA - Maps a domain to an IPv6 address
  • CNAME (Canonical Name) - Creates an alias pointing to another domain
  • MX (Mail Exchange) - Specifies mail servers for the domain