Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
first-air.co.uk
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-20 10:14:10 UTC · ↺ Refresh
MX Hostnames
- firstair-co-uk01c.mail.protection.outlook.com
MX Priorities
- firstair-co-uk01c.mail.protection.outlook.com: 0
A / AAAA Records
- 185.151.30.199 ↩ 185-151-30-199.ptr4.stackcp.net
Mail Server IPs
- 52.101.89.0 ↩ mail-lo2p265cu02300.inbound.protection.outlook.com
- 52.101.89.2 ↩ mail-lo3p265cu00302.inbound.protection.outlook.com
- 52.101.99.0 ↩ mail-cwxp265cu00600.inbound.protection.outlook.com
- 52.101.89.1 ↩ mail-lo0p265cu00201.inbound.protection.outlook.com
- 2a01:111:f403:ca0b:: ↩ mail-lo2p265cu02300.inbound.protection.outlook.com
- 2a01:111:f403:ca1a::1 ↩ mail-cwxp265cu00601.inbound.protection.outlook.com
- 2a01:111:f403:ca0b::1 ↩ mail-lo3p265cu00301.inbound.protection.outlook.com
- 2a01:111:f403:ca1a:: ↩ mail-cwxp265cu00500.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1.91-204-209-41.cprapid.com alerting.hostns.io 2026030501 3600 7200 1209600 86400
Primary NS (mname)
ns1.91-204-209-41.cprapid.com
Admin Email (rname)
alerting@hostns.io
Serial
2026030501
Refresh
3600s
Retry
7200s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns2.91-204-209-41.cprapid.com
ns1.91-204-209-41.cprapid.com
SPF Record
✓ Soft Fail (~all)
v=spf1 ip4:91.204.209.41 a:chi-web-01.simprocloud.com include:spf.protection.outlook.com include:spf.hostns.io include:spf.hostns.io ~all
📊 DNS lookups: 4/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
default._domainkey
mail._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: default
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
3 records- SPFv=spf1 ip4:91.204.209.41 a:chi-web-01.simprocloud.com include:spf.protection.outlook.com include:spf.hostns.io include:spf.hostns.io ~all
- brevo-code:b528f88a0a902d667cccc4b54846281d
- MS=ms28052048
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