DNS Record Lookup

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

Hosting & Network

user-guide.online runs on AS21069, with email configured.

Hosting network
AS21069AS21069
Managed DNS
Self-hosted / other
Email
Configured
IPv6 (AAAA)
Not enabled
CAA pinning
None

Sits alongside 4,999+ other sites on AS21069. Stable here since we started watching (Jul 21, 2026).

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

DNS Records for user-guide.online

HostnameTypeTTLPriorityContent
user-guide.onlineNS0ns2.tiberius.sui-inter.net
user-guide.onlineNS0ns1.tiberius.sui-inter.net
user-guide.onlineTXT0v=spf1 include:_spf.sui-inter.net +mx +a ~all
user-guide.onlineSOA10800ns2.tiberius.sui-inter.net hostmaster.user-guide.online 2026082401 10800 3600 1209600 10800
user-guide.onlineA080.74.128.8
user-guide.onlineMX010mail.user-guide.online
www.user-guide.onlineA080.74.128.8

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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

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.

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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