Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
b4b.co.uk
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-28 10:06:38 UTC · ↺ Refresh
MX Hostnames
- b4b-co-uk.mail.protection.outlook.com
MX Priorities
- b4b-co-uk.mail.protection.outlook.com: 10
A / AAAA Records
- 172.67.223.100 (no PTR)
- 104.21.70.120 (no PTR)
- 2606:4700:3030::6815:4678
- 2606:4700:3030::ac43:df64
Mail Server IPs
- 52.101.73.26 ↩ mail-as9pr05cu01302.inbound.protection.outlook.com
- 52.101.68.10 ↩ mail-dbbpr03cu00102.inbound.protection.outlook.com
- 52.101.68.15 ↩ mail-db6pr03cu00107.inbound.protection.outlook.com
- 52.101.73.4 ↩ mail-am0pr83cu00404.inbound.protection.outlook.com
- 2a01:111:f403:ca04::2 ↩ mail-du2pr03cu00102.inbound.protection.outlook.com
- 2a01:111:f403:ca04::6 ↩ mail-db4pr02cu00406.inbound.protection.outlook.com
- 2a01:111:f403:ca09::1 ↩ mail-as9pr07cu00301.inbound.protection.outlook.com
- 2a01:111:f403:ca09::9 ↩ mail-as8pr04cu00801.inbound.protection.outlook.com
SOA Record
Raw SOA
lisa.ns.cloudflare.com dns.cloudflare.com 2399158362 10000 2400 604800 1800
Primary NS (mname)
lisa.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2399158362
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
lisa.ns.cloudflare.com
west.ns.cloudflare.com
SPF Record
✓ Soft Fail (~all)
v=spf1 include:spf.protection.outlook.com include:sendgrid.net include:icpbounce.com include:_spf.atlassian.net include:_spf.hostedemail.com include:registrarmail.net ~all
📊 DNS lookups: 6/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine;
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._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
6 records- apple-domain-verification=PQHvWocu76AvhFta
- google-site-verification=mYqemMSivnfjEYm8FwVnl7FR1o5D072K9x3c3KwZ3Ok
- iContact1496727
- linkedin-site-verification=d4828742-cadc-4fee-9143-05876c5375d5
- SPFv=spf1 include:spf.protection.outlook.com include:sendgrid.net include:icpbounce.com include:_spf.atlassian.net include:_spf.hostedemail.com include:registrarmail.net ~all
- MS=ms93573874
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