DNS Record Lookup

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

Hosting & Network

i403b.info runs on AS23033.

Hosting network
AS23033AS23033
Managed DNS
Self-hosted / other
Email
None
IPv6 (AAAA)
Not enabled
CAA pinning
None

Sits alongside 941 other sites on AS23033. Stable here since we started watching (Sep 2, 2026).

The apex and www are the same hosting — the apex via A records, www via a CNAME to i403b.info.

DNS Records for i403b.info

HostnameTypeTTLPriorityContent
i403b.infoA0208.115.107.141
i403b.infoSOA86400pdns1.ultradns.net mbradley.icmarc.org 2012051103 86400 86400 86400 86400
i403b.infoNS0pdns2.ultradns.net
i403b.infoNS0pdns5.ultradns.info
i403b.infoNS0pdns6.ultradns.co.uk
i403b.infoNS0pdns4.ultradns.org
i403b.infoNS0pdns1.ultradns.net
i403b.infoNS0pdns3.ultradns.org
www.i403b.infoCNAME0i403b.info
www.i403b.infoA0208.115.107.141
www.i403b.infoSOA86400pdns1.ultradns.net mbradley.icmarc.org 2012051103 86400 86400 86400 86400
www.i403b.infoNS0pdns2.ultradns.net
www.i403b.infoNS0pdns6.ultradns.co.uk
www.i403b.infoNS0pdns5.ultradns.info
www.i403b.infoNS0pdns3.ultradns.org
www.i403b.infoNS0pdns4.ultradns.org
www.i403b.infoNS0pdns1.ultradns.net

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Uptime

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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