cityoflondon.gov.uk

Valid Email Server
Domain Lookup › cityoflondon.gov.uk

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
cityoflondon.gov.uk
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-23 02:02:17 UTC · ↺ Refresh

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MX Hostnames

  • cityoflondon-gov-uk.mail.protection.outlook.com

MX Priorities

  • cityoflondon-gov-uk.mail.protection.outlook.com: 1

A / AAAA Records

  • 104.20.19.80 (no PTR)
  • 172.66.155.113 (no PTR)
  • 2606:4700:10::6814:1350
  • 2606:4700:10::ac42:9b71

Mail Server IPs

  • 52.101.99.0 ↩ mail-cwxp265cu00600.inbound.protection.outlook.com
  • 52.101.89.0 ↩ mail-lo2p265cu02300.inbound.protection.outlook.com
  • 52.101.89.1 ↩ mail-lo0p265cu00201.inbound.protection.outlook.com
  • 52.101.89.2 ↩ mail-lo3p265cu00302.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:ca0b::1 ↩ mail-lo3p265cu00301.inbound.protection.outlook.com
  • 2a01:111:f403:ca0b:: ↩ mail-lo2p265cu02300.inbound.protection.outlook.com

SOA Record

Raw SOA jake.ns.cloudflare.com dns.cloudflare.com 2399639708 10000 2400 604800 1800
Primary NS (mname)
jake.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2399639708
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s

Nameservers (NS)

jake.ns.cloudflare.com
treasure.ns.cloudflare.com

SPF Record

✓ Strict (-all)
v=spf1 ip4:51.140.24.47/32 ip4:23.227.38.64/32 ip4:54.240.90.57/32 ip4:54.240.90.56 ip4:85.133.123.250 ip4:37.244.88.0/24 include:sp2.cityoflondon.gov.uk include:spf.protection.outlook.com include:mailcontrol.com include:servers.mcsv.net include:customers.clickdimensions.com include:_spf.mlsend.com include:_spf.firmstep.com -all
📊 DNS lookups: 7/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✓ Reject
v=DMARC1;p=reject;sp=reject;pct=100;rua=mailto:[email protected]
✓ Reject — strongest protection
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: reject

DKIM Selectors

✓ 5 found
selector1._domainkey
selector2._domainkey
k1._domainkey
s1._domainkey
s2._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

8 records
  • msfpkey=5xpv02ptwdr8z7tfwom1cge3
  • spf.mailjet.com
  • v=msv1t=0F2DCBB1-D8B0-4698-9721-6B2B48AA12AD
  • SPFv=spf1 ip4:51.140.24.47/32 ip4:23.227.38.64/32 ip4:54.240.90.57/32 ip4:54.240.90.56 ip4:85.133.123.250 ip4:37.244.88.0/24 include:sp2.cityoflondon.gov.uk include:spf.protection.outlook.com include:mailcontrol.com include:servers.mcsv.net include:customers.clickdimensions.com include:_spf.mlsend.com include:_spf.firmstep.com -all
  • MS=ms45080239
  • Z6qxeDy0jOHWN2UQVDa4jnTnX9tNBG4nZ3TSEegiBUyI1p353x11ce/W4sgbxFySXXUlc2QmY8itoEXnTR0kKw==
  • apple-domain-verification=6yVsOOlQrk0DazlN
  • autodesk-domain-verification=0s101rPaUkywdeA8n6Le
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