Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
carbonbit.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-21 21:07:49 UTC · ↺ Refresh
MX Hostnames
- carbonbit-com.mail.protection.outlook.com
MX Priorities
- carbonbit-com.mail.protection.outlook.com: 10
A / AAAA Records
- 185.151.44.56 ↩ qamari.nublue-host.uk
Mail Server IPs
- 52.101.68.3 ↩ mail-db7pr03cu00403.inbound.protection.outlook.com
- 52.101.68.10 ↩ mail-dbbpr03cu00102.inbound.protection.outlook.com
- 52.101.68.39 ↩ mail-db7pr03cu00607.inbound.protection.outlook.com
- 52.101.68.8 ↩ mail-du0pr03cu00100.inbound.protection.outlook.com
- 2a01:111:f403:ca09::b ↩ mail-am7pr05cu00103.inbound.protection.outlook.com
- 2a01:111:f403:ca04::c ↩ mail-db9pr02cu00204.inbound.protection.outlook.com
- 2a01:111:f403:ca04::e ↩ mail-db8pr02cu00106.inbound.protection.outlook.com
- 2a01:111:f403:ca04::10 ↩ mail-dbapr03cu00100.inbound.protection.outlook.com
SOA Record
Raw SOA
ns0.ukfast.net support.ukfast.co.uk 2026012002 7200 3600 604800 600
Primary NS (mname)
ns0.ukfast.net
Admin Email (rname)
support@ukfast.co.uk
Serial
2026012002
Refresh
7200s
Retry
3600s
Expire
604800s
Minimum TTL
600s
Nameservers (NS)
ns0.ukfast.net
ns1.ukfast.net
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com ip4:185.151.44.56 ip4:46.37.175.143 include:mailgun.org include:spf.UK.exclaimer.net ip4:149.107.88.21 -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]; ruf=mailto:[email protected]; sp=none; fo=1
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: none
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
3 records- MS=ms82562352
- SPFv=spf1 include:spf.protection.outlook.com ip4:185.151.44.56 ip4:46.37.175.143 include:mailgun.org include:spf.UK.exclaimer.net ip4:149.107.88.21 -all
- MS=ms88916643
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