um.att.com

Valid Email Server
Domain Lookup › um.att.com

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
um.att.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-03-22 05:17:41 UTC · ↺ Refresh

MX Hostnames

  • mail-cvm.att.com
  • att-um-east.mx.a.cloudfilter.net
  • att-um-west.mx.a.cloudfilter.net

MX Priorities

  • att-um-east.mx.a.cloudfilter.net: 10
  • att-um-west.mx.a.cloudfilter.net: 10
  • mail-cvm.att.com: 20

A / AAAA Records

  • 12.176.186.145 (no PTR)
  • 2001:1890:e000:7c0e::300 (no PTR)

Mail Server IPs

  • 52.86.76.155 ↩ ec2-52-86-76-155.compute-1.amazonaws.com
  • 34.202.202.105 ↩ ec2-34-202-202-105.compute-1.amazonaws.com
  • 44.240.224.171 ↩ ec2-44-240-224-171.us-west-2.compute.amazonaws.com
  • 52.36.133.144 ↩ ec2-52-36-133-144.us-west-2.compute.amazonaws.com

SOA Record

Raw SOA ns0.attdns.com eiss-dns.att.com 2025041401 3600 1800 2592000 300
Primary NS (mname)
ns0.attdns.com
Admin Email (rname)
eiss-dns@att.com
Serial
2025041401
Refresh
3600s
Retry
1800s
Expire
2592000s
Minimum TTL
300s

Nameservers (NS)

a5-67.akam.net
a9-66.akam.net
a14-65.akam.net
a8-64.akam.net
a1-212.akam.net
a4-66.akam.net

SPF Record

✓ Soft Fail (~all)
v=spf1 include:att-um.spf.a.cloudfilter.net ip4:12.29.209.34 ip4:199.108.22.72/29 ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

DKIM Selectors

✗ None detected

No DKIM records found for common selectors — your provider may use a custom selector name.

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

1 record
  • SPFv=spf1 include:att-um.spf.a.cloudfilter.net ip4:12.29.209.34 ip4:199.108.22.72/29 ~all
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