DNS Record Lookup

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

sending.one

DNS Records

WhoisRDAPDNS RecordsCertificateUptimeDiagnosticsHistoryHide Contact Info

Hosting & Network

sending.one runs on AS31103, with email via Microsoft 365.

Hosting network
AS31103AS31103
Managed DNS
Self-hosted / other
Email
Microsoft 365
IPv6 (AAAA)
Not enabled
CAA pinning
Set

Sits alongside 10,471 other sites on AS31103. Stable here since we started watching (Sep 15, 2026).

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

DNS Records for sending.one

HostnameTypeTTLPriorityContent
sending.oneCAA00 issuewild sectigo.com
sending.oneCAA00 issue sectigo.com
sending.oneMX0parcel-one.mail.protection.outlook.com
sending.oneSOA10800ns2.km31119.keymachine.de sm.parcel.one 2026090701 10800 3600 604800 10800
sending.oneA087.118.121.191
sending.oneTXT0openai-domain-verification=dv-KVF3EFkjNw9UXj5tkBOXEEML
sending.oneTXT0v=spf1 +a +mx +a:km31119.keymachine.de +ip4:77.220.239.232 +ip4:79.143.179.65 include:spf.system-hoster.com include:spf.protection.outlook.com -all
sending.oneTXT0atlassian-domain-verification=G3IMZh7ze6OV9QXTA1hbRNgnGPzoKoimk7BlMzjjEFSOAQQA47AArJ4v5uw8NR6N
sending.oneTXT0atlassian-sending-domain-verification=c8816151-fa4f-481e-ba20-2e04827de4ce
sending.oneNS0ns2.km31119.keymachine.de
sending.oneNS0ns.km31119.keymachine.de
www.sending.oneCAA00 issuewild sectigo.com
www.sending.oneCAA00 issue sectigo.com
www.sending.oneNS0ns.km31119.keymachine.de
www.sending.oneNS0ns2.km31119.keymachine.de
www.sending.oneTXT0v=spf1 +a +mx +a:km31119.keymachine.de +ip4:77.220.239.232 +ip4:79.143.179.65 include:spf.system-hoster.com include:spf.protection.outlook.com -all
www.sending.oneTXT0atlassian-domain-verification=G3IMZh7ze6OV9QXTA1hbRNgnGPzoKoimk7BlMzjjEFSOAQQA47AArJ4v5uw8NR6N
www.sending.oneTXT0openai-domain-verification=dv-KVF3EFkjNw9UXj5tkBOXEEML
www.sending.oneTXT0atlassian-sending-domain-verification=c8816151-fa4f-481e-ba20-2e04827de4ce
www.sending.oneMX0parcel-one.mail.protection.outlook.com
www.sending.oneCNAME0sending.one
www.sending.oneSOA10800ns2.km31119.keymachine.de sm.parcel.one 2026090701 10800 3600 604800 10800
www.sending.oneA087.118.121.191

Get alerted the moment sending.one's DNS changes

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

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.

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 sending.one

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