Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
nbt.nhs.uk
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-22 22:36:29 UTC · ↺ Refresh
MX Hostnames
- nbt-nhs-uk.mail.protection.outlook.com
MX Priorities
- nbt-nhs-uk.mail.protection.outlook.com: 0
A / AAAA Records
- 151.243.216.13 ↩ lb7.sentinel.cilix.cloud
Mail Server IPs
- 52.101.73.15 ↩ mail-am9pr04cu00107.inbound.protection.outlook.com
- 52.101.68.18 ↩ mail-db4pr02cu00302.inbound.protection.outlook.com
- 52.101.68.21 ↩ mail-db4pr02cu00205.inbound.protection.outlook.com
- 52.101.73.153 ↩ mail-as8pr05cu00401.inbound.protection.outlook.com
- 2a01:111:f403:ca04::9 ↩ mail-db7pr03cu00601.inbound.protection.outlook.com
- 2a01:111:f403:ca09::9 ↩ mail-as8pr04cu00801.inbound.protection.outlook.com
- 2a01:111:f403:ca04::5 ↩ mail-db3pr0202cu00205.inbound.protection.outlook.com
- 2a01:111:f403:ca04::f ↩ mail-db7pr03cu00507.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1.nhs.uk hostmaster.nominet.uk 2025120803 10800 3600 604800 3600
Primary NS (mname)
ns1.nhs.uk
Admin Email (rname)
hostmaster@nominet.uk
Serial
2025120803
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns2.nhs.uk
ns3.nhs.uk
ns4.nhs.uk
ns1.nhs.uk
SPF Record
✓ Strict (-all)
v=spf1 a ip4:109.74.199.90 ip4:82.33.244.243 ip4:82.33.244.244 ip4:62.253.26.249 ip4:62.253.26.251 include:_spf.elasticemail.com include:spf.protection.outlook.com -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected],mailto:[email protected];
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected],mailto:[email protected]
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._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
5 records- apple-domain-verification=ZbaHc42tExWKblA4
- MS=E4E4C586B023EEE5EABE40707ED314E74847AE74
- V5/Vj7shPRJUQWvQFq1Fjd2e/gTRMkji77WHDwNgJssE5Z4cSewPFLfRFLdyLT2PejprNL/TjZuuzRNAZjfMKQ==
- SPFv=spf1 a ip4:109.74.199.90 ip4:82.33.244.243 ip4:82.33.244.244 ip4:62.253.26.249 ip4:62.253.26.251 include:_spf.elasticemail.com include:spf.protection.outlook.com -all
- MS=ms45599839
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