DNS Record Lookup

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

xo.com

DNS Records

WhoisRDAPDNS RecordsCertificateUptimeDiagnosticsHistoryHide Contact Info

Hosting & Network

xo.com runs on Amazon AWS, with email via Proofpoint.

Hosting network
Amazon AWSAS16509Amazon AWS
Managed DNS
Self-hosted / other
Email
Proofpoint
IPv6 (AAAA)
Not enabled
CAA pinning
None

Sits alongside 5,843,432 other sites on Amazon AWS. Stable here since we started watching (Jul 15, 2026).

DNS Records for xo.com

HostnameTypeTTLPriorityContent
xo.comTXT0qm0g7zkvj1t3z2l3dd3nlzfdm4pbg33w
xo.comTXT0smartsheet-site-validation=V3VbRh97ABuGmpl_wREHAEWtsewGtJKC
xo.comTXT0amazonses:FR+snpgjR0bvj1KgWDDUDuQM0TdXqn4X3oZ645F0n7M=
xo.comTXT0google-site-verification=nA60hvX7sN1bxmbAE2aVwOpueFAf9CBZHRUjr83omZ0
xo.comTXT0mgb35kt7y711zvfn3g4lz51cr08mj5y2
xo.comTXT0v=spf1 ip4:205.158.160.37 ip4:205.158.160.39 ip4:205.158.160.44 ip4:205.158.160.45 ip4:207.88.96.56 ip4:207.88.96.57 ip4:207.155.252.25 ip4:207.155.248.233 include:spf-0024a201.pphosted.com include:xoint.net -all
xo.comA035.164.216.153
xo.comNS0ns-scrm.verizonwireless.com
xo.comNS0ns-twbg.verizonwireless.com
xo.comNS0ns-tmtr.verizonwireless.com
xo.comMX0mxa-0024a201.gslb.pphosted.com
xo.comMX0mxb-0024a201.gslb.pphosted.com
xo.comSOA300ns-twbg.verizonwireless.com hostmaster.xo.com 2013072091 10800 3600 604800 300
www.xo.comCNAME0hostredirects.vzbtest.info
www.xo.comA044.237.199.84
www.xo.comA044.232.87.85
www.xo.comA044.241.249.208
www.xo.comA035.164.216.153

Get alerted the moment xo.com's DNS changes

This page is today's snapshot. Turn on monitoring and we'll watch xo.com continuously, notifying you the moment anything moves across all three signals:

DNS monitor showing the hosting provider, current A, MX, NS, and TXT records, and a history of MX and TXT changes

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, CNAME, TXT 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.

Monitor DNS free

Free for your first domain: uptime, DNS, and certificate together. No credit card.

What's up with DNS →

Our daily roundup of the most interesting DNS changes across the web — hosting and CDN migrations, network moves, and security-config shifts.

Ask about xo.com

Beta

Answers use the live DNS records shown on this page. AI-generated — double-check anything important.

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