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challenge.gov

DNS Records

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Hosting & Network

challenge.gov runs on AS16524, with email via Google Workspace.

Hosting network
AS16524AS16524
Managed DNS
Self-hosted / other
Email
Google Workspace
IPv6 (AAAA)
Not enabled
CAA pinning
None

Sits alongside 58 other sites on AS16524. Stable here since we started watching (Aug 10, 2026).

DNS Records for challenge.gov

HostnameTypeTTLPriorityContent
challenge.govTXT0amazonses:nYH0JuMG9fZipOEeSQuJI0zkMtSE/O2rhkY4EquztWM=
challenge.govTXT0v=spf1 include:spf_sa.gsa.gov ip4:52.247.150.17 include:1962994.spf05.hubspotemail.net include:mail.zendesk.com ~all
challenge.govTXT0google-site-verification=oUCYv-kO8yizhDvNj27YU7jch6xQbJTTbfd0LuPKakI
challenge.govTXT0n99vf8kufk66l1dfiemv47ennt
challenge.govMX05alt2.aspmx.l.google.com
challenge.govMX010alt4.aspmx.l.google.com
challenge.govMX05alt1.aspmx.l.google.com
challenge.govMX01aspmx.l.google.com
challenge.govMX010alt3.aspmx.l.google.com
challenge.govSOA3600dns.gsa.gov hostmaster.gsa.gov 808420260 3600 180 1209600 3600
challenge.govNS0dns.gsa.gov
challenge.govNS0dns2.gsa.gov
challenge.govNS0dns3.gsa.gov
challenge.govNS0dns5.gsa.gov
challenge.govNS0dns4.gsa.gov
challenge.govA0159.142.191.107
www.challenge.govCNAME0www.challenge.gov.external-domains-production.cloud.gov
www.challenge.govAAAA02600:9000:2508:3a00:1:3fe0:8b80:93a1
www.challenge.govAAAA02600:9000:2508:1200:1:3fe0:8b80:93a1
www.challenge.govAAAA02600:9000:2508:7600:1:3fe0:8b80:93a1
www.challenge.govAAAA02600:9000:2508:3400:1:3fe0:8b80:93a1
www.challenge.govAAAA02600:9000:2508:dc00:1:3fe0:8b80:93a1
www.challenge.govAAAA02600:9000:2508:1400:1:3fe0:8b80:93a1
www.challenge.govAAAA02600:9000:2508:4a00:1:3fe0:8b80:93a1
www.challenge.govAAAA02600:9000:2508:b400:1:3fe0:8b80:93a1
www.challenge.govA0108.138.64.74
www.challenge.govA0108.138.64.43
www.challenge.govA0108.138.64.102
www.challenge.govA0108.138.64.128

Get alerted the moment challenge.gov's DNS changes

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Uptime

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DNS changes

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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