customer.io
The domain customer.io answers at IP address 76.76.21.21. That address belongs to Vercel, Inc, based in United States. The domain DNS is managed by Amazon Route 53, which decides where each subdomain points. Mail for customer.io goes through 5 servers; the highest priority one is aspmx.l.google.com. It also publishes 25 TXT records, used to verify domain ownership with external services and to configure mail security through SPF, DKIM and DMARC.
A A records
- 76.76.21.21 28s
MX MX records
- 1 aspmx.l.google.com 60s
- 5 alt2.aspmx.l.google.com 60s
- 5 alt1.aspmx.l.google.com 60s
- 10 aspmx2.googlemail.com 60s
- 10 aspmx3.googlemail.com 60s
NS NS records
- ns-1893.awsdns-44.co.uk 19228s
- ns-618.awsdns-13.net 19228s
- ns-499.awsdns-62.com 19228s
- ns-1181.awsdns-19.org 19228s
TXT TXT records
- google-site-verification=HbwteWh_QF6HnNCDLL_1X_GRwURBkYEdFAVM00rxf_k 60s
- google-site-verification=gsxlVNPtm1JCawWVNMCOVuWLK9lhzdr4Dofz-V-lovo 60s
- hubspot-developer-verification=NDkzOTIwZWMtMDVkNS00YTAzLThlMDQtZDJmYzVjNzc5Zjgw 60s
- zapier-domain-verification-challenge=3373ff99-18e1-4a49-8e81-67d830eb392b 60s
- cursor-domain-verification-m2k2b5=XfoK2FPHAUqoNHiCpHtqY2fXP 60s
- OSSRH-70026 60s
- v=spf1 include:helpscoutemail.com include:_spf.google.com include:servers.mcsv.net include:amazonses.com include:mail.zendesk.com ~all 60s
- slack-domain-verification=XRnWU545ZVlzHN85aeTWX7xzunEJk8Ouav9KjN7Q 60s
- openai-domain-verification=dv-icOHzM0IplqgpTNoO3nJaRCX 60s
- sinch-domain-verification=77675a95-7309-44bf-9483-5f9020edc778 60s
- jetbrains-domain-verification=rdxczp2suguw502vrx4cqksy 60s
- notion-domain-verification=DHmczCmyAqc8TGp6DPbfWBxLb9lSgvPv7wSOiiJfAJK 60s
- anthropic-domain-verification-h4s30h=RXWAAyC4VDThCnWjaprWPkUET 60s
- MS=ms56053829 60s
- loom-site-verification=4dac5f34468e49a299444383229599d5 60s
- have-i-been-pwned-verification=a9d6f2edb8654dcfe04e310cdc9a000a 60s
- mixpanel-domain-verify=d5c389d5-df00-473a-8263-3932c19beecb 60s
- airtable-verification=a839ac25097d07e90b6725421494b506 60s
- ps-cd-verification=6d210b55-ec4b-4105-a1d7-7a73c78619fd 60s
- miro-verification=89a8ecb5df4f4febc758723fcfabd5af59041414 60s
- asv=8738dd37f3c5a1368cba93d24b4a1e17 60s
- 1password-site-verification=NKRDO4YCMBDD7KNUO4PN6RZCA4 60s
- facebook-domain-verification=62g2j16g5qkvf38ekdrtxiez0bsqei 60s
- linear-domain-verification=wetdfvhymmbh 60s
- docusign=48e7526a-7539-4ad0-b672-7a94c3a20c29 60s
SOA SOA records
- ns-1181.awsdns-19.org 900s
What each record means
- A and AAAA: the server IP address, in IPv4 and IPv6.
- MX: the servers that receive the domain mail. The number is the priority; the lowest is tried first.
- NS: the name servers, which have the final say over the domain DNS.
- TXT: free text. Mostly used for SPF, DKIM and DMARC, and to verify ownership with third parties.
- TTL: how many seconds the record may be cached before asking again.
Checked 3 hours ago.