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cjsb.es.kr

DNS Records

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Hosting & Network

cjsb.es.kr runs on AS45389, with email via Microsoft 365.

Hosting network
AS45389AS45389
Managed DNS
Self-hosted / other
Email
Microsoft 365
IPv6 (AAAA)
Not enabled
CAA pinning
None

Sits alongside 3 other sites on AS45389. Stable here since we started watching (Jul 16, 2026).

The apex and www are the same hosting — the apex via A records.

DNS Records for cjsb.es.kr

HostnameTypeTTLPriorityContent
cjsb.es.krSOA300dns1.jbedu.kr admin.jbedu.kr 2009103029 1800 300 2592000 300
cjsb.es.krA0211.210.30.143
cjsb.es.krMX010cjsb-es-kr.mail.protection.outlook.com
cjsb.es.krTXT0v=spf1 include:spf.protection.outlook.com -all
cjsb.es.krTXT0MS=ms55519301
cjsb.es.krNS0dns1.jbedu.kr
cjsb.es.krNS0dns2.jbedu.kr
www.cjsb.es.krA0211.210.30.143

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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, DNSSEC, CNAME 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

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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