Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
williamson.co.uk
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-04-04 06:27:41 UTC · ↺ Refresh
MX Hostnames
- williamson-co-uk.mail.protection.outlook.com
MX Priorities
- williamson-co-uk.mail.protection.outlook.com: 10
A / AAAA Records
- 45.8.224.202 ↩ vps-8a3323.stackvps.com
Mail Server IPs
- 52.101.68.36 ↩ mail-db5pr02cu00104.inbound.protection.outlook.com
- 52.101.73.8 ↩ mail-am0pr04cu00500.inbound.protection.outlook.com
- 52.101.68.39 ↩ mail-db7pr03cu00607.inbound.protection.outlook.com
- 52.101.68.29 ↩ mail-dbapr03cu00105.inbound.protection.outlook.com
- 2a01:111:f403:ca09::6 ↩ mail-am4pr0401cu00106.inbound.protection.outlook.com
- 2a01:111:f403:ca09::4 ↩ mail-am0pr04cu00504.inbound.protection.outlook.com
- 2a01:111:f403:ca09::9 ↩ mail-as8pr04cu00801.inbound.protection.outlook.com
- 2a01:111:f403:ca04::10 ↩ mail-dbapr03cu00100.inbound.protection.outlook.com
SOA Record
Raw SOA
udns1.cscdns.net hostmaster.cscdns.net 2018080202 86400 86400 86400 86400
Primary NS (mname)
udns1.cscdns.net
Admin Email (rname)
hostmaster@cscdns.net
Serial
2018080202
Refresh
86400s
Retry
86400s
Expire
86400s
Minimum TTL
86400s
Nameservers (NS)
udns2.cscdns.uk
udns1.cscdns.net
SPF Record
✓ Strict (-all)
v=spf1 ip4:51.140.55.43 ip4:52.142.188.230 ip4:213.212.85.72 ip4:89.206.230.178 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._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
7 records- _fobrho6mmd18u6xyk1g97yklyqnyh2v
- SPFv=spf1 ip4:51.140.55.43 ip4:52.142.188.230 ip4:213.212.85.72 ip4:89.206.230.178 include:spf.protection.outlook.com -all
- MS=ms72311731
- ar9f4epjvfv9b8lrr6jp1306pa
- bms3qr9ciltcduj00t0rfu28i7
- pa0haauud2khls3160bs5afs4r
- pcvsrutr6ub6hdqktsbm21r4kb
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