Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
pierce.co.uk
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-20 06:13:52 UTC · ↺ Refresh
MX Hostnames
- pierce-co-uk.mail.protection.outlook.com
MX Priorities
- pierce-co-uk.mail.protection.outlook.com: 10
A / AAAA Records
- 45.145.100.201 ↩ 45.145.100.201.srvlist.ukfast.net
Mail Server IPs
- 52.101.68.39 ↩ mail-db7pr03cu00607.inbound.protection.outlook.com
- 52.101.73.4 ↩ mail-am0pr83cu00404.inbound.protection.outlook.com
- 52.101.68.18 ↩ mail-db4pr02cu00302.inbound.protection.outlook.com
- 52.101.73.12 ↩ mail-am4pr0401cu00104.inbound.protection.outlook.com
- 2a01:111:f403:ca09::e ↩ mail-am7pr05cu00206.inbound.protection.outlook.com
- 2a01:111:f403:ca04::a ↩ mail-du0pr03cu00102.inbound.protection.outlook.com
- 2a01:111:f403:ca04::6 ↩ mail-db4pr02cu00406.inbound.protection.outlook.com
- 2a01:111:f403:ca04::d ↩ mail-db6pr03cu00105.inbound.protection.outlook.com
SOA Record
Raw SOA
ns0.zen.co.uk dnsmaster.zen.co.uk 2016112579 2400 1800 604800 86400
Primary NS (mname)
ns0.zen.co.uk
Admin Email (rname)
dnsmaster@zen.co.uk
Serial
2016112579
Refresh
2400s
Retry
1800s
Expire
604800s
Minimum TTL
86400s
Nameservers (NS)
ns1.zen.co.uk
ns0.zen.co.uk
SPF Record
✓ Soft Fail (~all)
v=spf1 ip4:45.145.100.201 ip4:92.71.158.250 ip4:82.20.79.153 ip4:51.219.42.17 ip4:92.71.158.250 include:spf.protection.outlook.com include:spf.sendinblue.com include:autotask.net include:spf.mandrillapp.com include:spf.uk.exclaimer.net include:spf2.accessacloud.com ~all
📊 DNS lookups: 6/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected], mailto:[email protected];
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected], mailto:[email protected]
DKIM Selectors
✓ 3 found
selector1._domainkey
selector2._domainkey
mail._domainkey
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
4 records- Sendinblue-code:121338321cb47da41c7f1b83b968aa35
- access-domain-verification=16bf5a1a674f12c432ad9f3a40be4a953b03a6e7ebdabd1718e1282a5941cb9c
- SPFv=spf1 ip4:45.145.100.201 ip4:92.71.158.250 ip4:82.20.79.153 ip4:51.219.42.17 ip4:92.71.158.250 include:spf.protection.outlook.com include:spf.sendinblue.com include:autotask.net include:spf.mandrillapp.com include:spf.uk.exclaimer.net include:spf2.accessacloud.com ~all
- access-domain-verification=237b350d019b9e9c1820864eb540b8eefbd11b8b1c10592e6b3b9d56ae632a72
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