Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
publicfirst.co.uk
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-18 23:07:38 UTC · ↺ Refresh
MX Hostnames
- publicfirst-co-uk.mail.protection.outlook.com
MX Priorities
- publicfirst-co-uk.mail.protection.outlook.com: 0
A / AAAA Records
- 77.72.2.29 ↩ morgan.krystal.uk
Mail Server IPs
- 52.101.68.39 ↩ mail-db7pr03cu00607.inbound.protection.outlook.com
- 52.101.73.24 ↩ mail-as8pr05cu00300.inbound.protection.outlook.com
- 52.101.68.5 ↩ mail-du2pr03cu00105.inbound.protection.outlook.com
- 52.101.73.28 ↩ mail-am7pr05cu00204.inbound.protection.outlook.com
- 2a01:111:f403:ca09::d ↩ mail-as9pr05cu01305.inbound.protection.outlook.com
- 2a01:111:f403:ca04::e ↩ mail-db8pr02cu00106.inbound.protection.outlook.com
- 2a01:111:f403:ca09:: ↩ mail-am3pr04cu00500.inbound.protection.outlook.com
- 2a01:111:f403:ca04::a ↩ mail-du0pr03cu00102.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1.krystal.uk admin.k-validator-morgan.krystal.uk 2026031500 3600 1800 1209600 86400
Primary NS (mname)
ns1.krystal.uk
Admin Email (rname)
admin@k-validator-morgan.krystal.uk
Serial
2026031500
Refresh
3600s
Retry
1800s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns2.krystal.uk
ns1.krystal.uk
SPF Record
✓ Strict (-all)
v=spf1 include:relay.k.io include:_spf.alchemer.com ip4:77.72.1.19 ip4:77.72.2.29 include:spf.protection.outlook.com -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected];
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 5 found
selector1._domainkey
selector2._domainkey
default._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
8 records- slack-domain-verification=w1gSbOtd7G5RRmUEfaGlKYKIo3lPCmdn7aRfqWdx
- airtable-verification=1cc4bd7c988e6cad8f64351dcd318fa5
- apple-domain-verification=XtamQiEl8gVZeCld
- MS=ms12670485
- asv=066a62e0a832c8f21488d92b70b70511
- SPFv=spf1 include:relay.k.io include:_spf.alchemer.com ip4:77.72.1.19 ip4:77.72.2.29 include:spf.protection.outlook.com -all
- openai-domain-verification=dv-4QtZUNxXyisXNp3F97M2bDfj
- google-site-verification=Skvrir__FZcdey0cDrHhEp4tA2HU6DyL5sy77-yqaVk
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