Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
sealandmaersk.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-21 23:12:43 UTC · ↺ Refresh
MX Hostnames
- sealandmaersk-com.mail.protection.outlook.com
MX Priorities
- sealandmaersk-com.mail.protection.outlook.com: 0
A / AAAA Records
- 165.160.15.20 (no PTR)
- 165.160.13.20 (no PTR)
Mail Server IPs
- 52.101.73.8 ↩ mail-am0pr04cu00500.inbound.protection.outlook.com
- 52.101.68.16 ↩ mail-db4pr02cu00400.inbound.protection.outlook.com
- 52.101.73.4 ↩ mail-am0pr83cu00404.inbound.protection.outlook.com
- 52.101.73.19 ↩ mail-as8pr04cu00803.inbound.protection.outlook.com
SOA Record
Raw SOA
a1-4.akam.net hostmaster.sealandmaersk.com 2023103276 3600 600 604800 300
Primary NS (mname)
a1-4.akam.net
Admin Email (rname)
hostmaster@sealandmaersk.com
Serial
2023103276
Refresh
3600s
Retry
600s
Expire
604800s
Minimum TTL
300s
Nameservers (NS)
a18-64.akam.net
a13-67.akam.net
a8-67.akam.net
a22-65.akam.net
a3-66.akam.net
a1-4.akam.net
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:spf.medallia.com ip4:40.74.9.71 ip4:52.142.217.3 ip4:52.142.217.195 ip4:193.163.252.51 ip4:20.8.50.240 ip4:135.84.80.180 ip4:193.163.252.50 ip4:23.103.224.0/19 ip4:206.191.224.0/19 ip4:40.103.0.0/16 ip4:40.91.238.97 include:_spf.salesforce.com include:cust-spf.exacttarget.com include:ged.ipsos-interactive.com -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; pct=100; fo=1; ri=3600; rua=mailto:[email protected]; ruf=mailto:[email protected];
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 3 found
selector1._domainkey
selector2._domainkey
mail._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
9 records- 7a52d3d03a5a1253dd2b0d83184e5b290cc1b6d74c2d040c60cad8228a3ee8ba
- MS=ms83408824
- AQBG1ZXO9UMUAQ24EA06L94I7MPSPRHH8WNPOQZL
- gh2f36bnrmtds8e1debcqn5irb
- SPFv=spf1 include:spf.protection.outlook.com include:spf.medallia.com ip4:40.74.9.71 ip4:52.142.217.3 ip4:52.142.217.195 ip4:193.163.252.51 ip4:20.8.50.240 ip4:135.84.80.180 ip4:193.163.252.50 ip4:23.103.224.0/19 ip4:206.191.224.0/19 ip4:40.103.0.0/16 ip4:40.91.238.97 include:_spf.salesforce.com include:cust-spf.exacttarget.com include:ged.ipsos-interactive.com -all
- atlassian-domain-verification=XsiRE7vL/wteQab1X/BscwjB/M3Exkmsg0WSgYRPV/YJsz1bRfKaolSza7YH5z3n
- 7iqdqgr9k047ucompnften6ktl
- adobe-idp-site-verification=4000ae9562a37a86e88461dc952cffd989f6ba998e6133cfc6fd1268f8e1b788
- aadhdmh7a3tdk2ikgoe6lha8ku
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 sealandmaersk.com
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits