Domain Overview
DNS: ✓ 10h ago
Checker: ✓ 10h ago
municontractors.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-05-21 05:23:38 UTC · ↺ Refresh
MX Hostnames
- municontractors-com.mail.protection.outlook.com
MX Priorities
- municontractors-com.mail.protection.outlook.com: 0
A / AAAA Records
- 67.225.196.129 ↩ server11.amst.com
Mail Server IPs
- 52.101.40.4 ↩ mail-cy5pr03cu00204.inbound.protection.outlook.com
- 52.101.50.4 ↩ mail-co1pr03cu00404.inbound.protection.outlook.com
- 52.101.41.21 ↩ mail-sj2pr05cu00305.inbound.protection.outlook.com
- 52.101.50.13 ↩ mail-mw2pr02cu00605.inbound.protection.outlook.com
- 2a01:111:f403:c931:: ↩ mail-sn1pr02cu00100.inbound.protection.outlook.com
- 2a01:111:f403:c902::1 ↩ mail-sj2pr05cu00401.inbound.protection.outlook.com
- 2a01:111:f403:c902::7 ↩ mail-sj0pr02cu00107.inbound.protection.outlook.com
- 2a01:111:f403:c927::1 ↩ mail-bn8pr05cu00301.inbound.protection.outlook.com
SOA Record
Raw SOA
ns11a.amst.com emergency+server11.amst.com 2025072301 3600 1800 1209600 86400
Primary NS (mname)
ns11a.amst.com
Admin Email (rname)
emergency+server11@amst.com
Serial
2025072301
Refresh
3600s
Retry
1800s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns11a.amst.com
ns11b.amst.com
SPF Record
✓ Strict (-all)
v=spf1 ip4:67.225.196.129 include:spf.protection.outlook.com ip6:2603:10b6::/37 -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; pct=100; rua=mailto:[email protected]; sp=reject; aspf=r;
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: reject
DKIM Selectors
✓ 3 found
selector1._domainkey
selector2._domainkey
default._domainkey
✓ Public key: 216 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
4 records- google-site-verification=LRXmA31dypLXAmKS3lgjp6In-ohVwbCN8Byqk8rO-Ag
- SPFv=spf1 ip4:67.225.196.129 include:spf.protection.outlook.com ip6:2603:10b6::/37 -all
- MS=ms94306742
- google-site-verification=D0uAal2HnmoSfddXBNBKr_kPoxphpsa75uDZ43R0pn0
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 municontractors.com
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits