Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
atlas.com.co
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-31 08:48:19 UTC · ↺ Refresh
MX Hostnames
- atlas-com-co.mail.protection.outlook.com
- mx.360nrs.com
MX Priorities
- atlas-com-co.mail.protection.outlook.com: 0
- mx.360nrs.com: 20
A / AAAA Records
- 54.68.53.224 ↩ ec2-54-68-53-224.us-west-2.compute.amazonaws.com
Mail Server IPs
- 52.101.41.24 ↩ mail-sj0pr03cu01600.inbound.protection.outlook.com
- 52.101.8.34 ↩ mail-dm2pr04cu00102.inbound.protection.outlook.com
- 52.101.194.15 ↩ mail-ch4pr21cu00107.inbound.protection.outlook.com
- 52.101.41.26 ↩ mail-sj0pr03cu01702.inbound.protection.outlook.com
- 2a01:111:f403:f902:: ↩ mail-bl2pr04cu00100.inbound.protection.outlook.com
- 2a01:111:f403:c931::1 ↩ mail-sa9pr03cu00201.inbound.protection.outlook.com
- 2a01:111:f403:c902::14 ↩ mail-byapr04cu00204.inbound.protection.outlook.com
- 2a01:111:f403:f90a:: ↩ mail-bn6pr02cu00300.inbound.protection.outlook.com
- 89.17.219.138 (no PTR)
SOA Record
Raw SOA
dns1.telecom.com.co postmaster.telecom.com.co 2013074729 10800 3600 604800 7200
Primary NS (mname)
dns1.telecom.com.co
Admin Email (rname)
postmaster@telecom.com.co
Serial
2013074729
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
7200s
Nameservers (NS)
dns.telecom.com.co
dns1.telecom.com.co
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; pct=100; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1; ri=86400
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
9 records- 7xj7uxelkqd5zonn5nqvjcphgl2ftbup.dkim.amazonses.com
- 22kkjwnxx4r3qdczgylcr2dtvzxxwqkq.dkim.amazonses.com
- at3otl4o3ist56emy3l77s6fzsykwu27.dkim.amazonses.com
- DMARCv=DMARC1; p=reject; pct=100; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1; ri=86400
- [email protected]
- [email protected],amazonses:
- MS=ms90346216
- SPFv=spf1 include:spf.protection.outlook.com -all
- qjjIpWk4qM6JsIFWBwfKoISKXH0GR9qrbz4zkcvL8eo=
Free · No signup required
Add email validation to your forms
Block disposable emails, validate MX records, detect role accounts — unlimited, forever free.
<script src="https://check.verifyswift.com/"></script>
One line of code · Works on any site
See demo & docs
Deep verification
Full email verification for atlas.com.co
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits