Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
celeritech.biz
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-28 08:26:08 UTC · ↺ Refresh
MX Hostnames
- celeritech-biz.mail.protection.outlook.com
MX Priorities
- celeritech-biz.mail.protection.outlook.com: 0
A / AAAA Records
- 104.21.53.106 (no PTR)
- 172.67.212.4 (no PTR)
- 2606:4700:3030::ac43:d404
- 2606:4700:3035::6815:356a
Mail Server IPs
- 52.101.50.7 ↩ mail-co1pr21cu00207.inbound.protection.outlook.com
- 52.101.194.4 ↩ mail-ch4pr04cu00104.inbound.protection.outlook.com
- 52.101.9.12 ↩ mail-bl0pr05cu00504.inbound.protection.outlook.com
- 52.101.9.5 ↩ mail-mn2pr04cu00205.inbound.protection.outlook.com
- 2a01:111:f403:f913:: ↩ mail-cy1pr03cu00100.inbound.protection.outlook.com
- 2a01:111:f403:f804::3 ↩ mail-co1pr03cu00403.inbound.protection.outlook.com
- 2a01:111:f403:c927::1 ↩ mail-bn8pr05cu00301.inbound.protection.outlook.com
- 2a01:111:f403:f912:: ↩ mail-cy5pr03cu00200.inbound.protection.outlook.com
SOA Record
Raw SOA
aida.ns.cloudflare.com dns.cloudflare.com 2400119192 10000 2400 604800 1800
Primary NS (mname)
aida.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2400119192
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
aida.ns.cloudflare.com
matteo.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:mail.zendesk.com include:21978621.spf01.hubspotemail.net -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none;
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 3 found
default._domainkey
s1._domainkey
s2._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
2 records- MS=ms12151618
- SPFv=spf1 include:spf.protection.outlook.com include:mail.zendesk.com include:21978621.spf01.hubspotemail.net -all
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