asttbc.org

Valid Email Server
Domain Lookup › asttbc.org
Live data — DNS records and disposable check were just fetched and saved.

Domain Overview

DNS: ⚡ live Checker: ⚡ live
asttbc.org
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-05-20 22:32:47 UTC · ↺ Refresh

MX Hostnames

  • asttbc-org.mail.protection.outlook.com

MX Priorities

No priority data.

A / AAAA Records

  • 35.206.110.231

Mail Server IPs

No IPs resolved.

SOA Record

No SOA record found.

Nameservers (NS)

ns28.domaincontrol.com
ns27.domaincontrol.com

SPF Record

✓ Strict (-all)
v=spf1 ip4:52.229.100.165 include:spf.protection.outlook.com include:authsmtp.com include:mail.imismailcenter.com -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ Missing

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

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

6 records
  • v=verifydomain MS=4794122
  • SPFv=spf1 ip4:52.229.100.165 include:spf.protection.outlook.com include:authsmtp.com include:mail.imismailcenter.com -all
  • _globalsign-domain-verification=ThWDqQu_S4Hzj2CHQestUl_TIHDXyN9yloZAz4orsu
  • MS=947626DCAA871F2ED60605DEBB80D6FA4FEE5CD0
  • zoho-verification=zb69713498.zmverify.zoho.com
  • _globalsign-domain-verification=wj7rVSMKwE4xI_cuqBTNEGr_J5VGsnph8uWiSBH74t
Full email verification for asttbc.org

Run SMTP check, SPF/DKIM/DMARC and catch-all detection.

SPF / DKIM / DMARC Get 1,000 Free Credits