DNS Record Lookup

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

Hosting & Network

arcos-tools.org runs on AS7212, with email configured.

Hosting network
AS7212AS7212
Managed DNS
Self-hosted / other
Email
Configured
IPv6 (AAAA)
Not enabled
CAA pinning
None

Sits alongside 27 other sites on AS7212. Stable here since we started watching (Jul 21, 2026).

DNS Records for arcos-tools.org

HostnameTypeTTLPriorityContent
arcos-tools.orgNS0ns1.vanderbilt.edu
arcos-tools.orgNS0ns3.vanderbilt.edu
arcos-tools.orgNS0ns2.vanderbilt.edu
arcos-tools.orgNS0ns4.vanderbilt.edu
arcos-tools.orgMX010vocypher.isis.vanderbilt.edu
arcos-tools.orgA0129.59.107.91
arcos-tools.orgTXT0v=spf1 include:_spf.mlsend.com a ip4:129.59.104.30 ip4:129.59.104.171 ~all
arcos-tools.orgTXT0_66vl4wobvo3505l4ugd0ya7sfkhubam
arcos-tools.orgSOA900ns1.vanderbilt.edu noc.vanderbilt.edu 11 10800 3600 2419200 900

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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.

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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