Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
buckminster.co.uk
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-04-02 17:09:04 UTC · ↺ Refresh
MX Hostnames
- buckminster-co-uk.mail.protection.outlook.com
MX Priorities
- buckminster-co-uk.mail.protection.outlook.com: 0
A / AAAA Records
- 172.67.198.124 (no PTR)
- 104.21.52.114 (no PTR)
- 2606:4700:3031::ac43:c67c
- 2606:4700:3033::6815:3472
Mail Server IPs
- 52.101.68.21 ↩ mail-db4pr02cu00205.inbound.protection.outlook.com
- 52.101.68.15 ↩ mail-db6pr03cu00107.inbound.protection.outlook.com
- 52.101.68.12 ↩ mail-db9pr02cu00204.inbound.protection.outlook.com
- 52.101.68.25 ↩ mail-db8pr02cu00101.inbound.protection.outlook.com
- 2a01:111:f403:ca09::5 ↩ mail-am1pr04cu00105.inbound.protection.outlook.com
- 2a01:111:f403:ca04::c ↩ mail-db9pr02cu00204.inbound.protection.outlook.com
- 2a01:111:f403:ca04::7 ↩ mail-db4pr02cu00307.inbound.protection.outlook.com
- 2a01:111:f403:ca09::8 ↩ mail-as2pr05cu00100.inbound.protection.outlook.com
SOA Record
Raw SOA
armando.ns.cloudflare.com dns.cloudflare.com 2398776413 10000 2400 604800 1800
Primary NS (mname)
armando.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2398776413
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
mira.ns.cloudflare.com
armando.ns.cloudflare.com
SPF Record
✓ Soft Fail (~all)
v=spf1 a ip4:212.250.52.30 ip4:185.151.30.133 include:spf.protection.outlook.com ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ p=none
v=DMARC1;p=none;sp=none;adkim=r;aspf=r;pct=100;rf=afrf;ri=86400; rua=mailto:[email protected];
⚠ p=none — monitoring only, no enforcement
📋 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
1 record- SPFv=spf1 a ip4:212.250.52.30 ip4:185.151.30.133 include:spf.protection.outlook.com ~all
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