Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
rootfiftytwo.co.uk
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-23 02:39:56 UTC · ↺ Refresh
MX Hostnames
- rootfiftytwo-co-uk.mail.protection.outlook.com
MX Priorities
- rootfiftytwo-co-uk.mail.protection.outlook.com: 0
A / AAAA Records
- 216.150.1.1 (no PTR)
Mail Server IPs
- 52.101.99.2 ↩ mail-cwxp265cu00502.inbound.protection.outlook.com
- 52.101.89.2 ↩ mail-lo3p265cu00302.inbound.protection.outlook.com
- 52.101.99.0 ↩ mail-cwxp265cu00600.inbound.protection.outlook.com
- 52.101.89.0 ↩ mail-lo2p265cu02300.inbound.protection.outlook.com
- 2a01:111:f403:ca0b::2 ↩ mail-lo0p265cu00202.inbound.protection.outlook.com
- 2a01:111:f403:ca1a:: ↩ mail-cwxp265cu00500.inbound.protection.outlook.com
- 2a01:111:f403:ca1a::1 ↩ mail-cwxp265cu00601.inbound.protection.outlook.com
- 2a01:111:f403:ca0b:: ↩ mail-lo2p265cu02300.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1.rootfiftytwo.co.uk logs.netnerd.com 2026032300 3600 1800 1209600 86400
Primary NS (mname)
ns1.rootfiftytwo.co.uk
Admin Email (rname)
logs@netnerd.com
Serial
2026032300
Refresh
3600s
Retry
1800s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns1.rootfiftytwo.co.uk
ns2.rootfiftytwo.vm.netnerd.com
ns1.rootfiftytwo.vm.netnerd.com
ns2.rootfiftytwo.co.uk
SPF Record
✓ Soft Fail (~all)
v=spf1 include:spf.protection.outlook.com include:_spf.createsend.com ip4:185.229.21.151 include:_spf.google.com +ip4:185.229.20.35 ~all
📊 DNS lookups: 3/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ p=none
v=DMARC1;p=none;sp=quarantine;adkim=r;aspf=r;pct=100;fo=1;rf=afrf;ri=86400
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
↳ Subdomain policy: quarantine
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._domainkey
default._domainkey
s1._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
6 records- SPFv=spf1 include:spf.protection.outlook.com include:_spf.createsend.com ip4:185.229.21.151 include:_spf.google.com +ip4:185.229.20.35 ~all
- MS=ms86272624
- openai-domain-verification=dv-srkJzHH0hMz4yzuUDP81Qu3P
- google-site-verification=b36919GLaWoBjdtL6YWmPEmWfuQUTtHVesgpVrQ_w8U
- google-site-verification=XIYDBjejpiGCgtCBDQnCxGWPXQdl8omzvSaFXg9k1rk
- apple-domain-verification=mxkAWg00tUt3QLho
Full email verification for rootfiftytwo.co.uk
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
SPF / DKIM / DMARC Get 1,000 Free Credits