Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
curbio.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-18 17:26:01 UTC · ↺ Refresh
MX Hostnames
- curbio-com.mail.protection.outlook.com
MX Priorities
- curbio-com.mail.protection.outlook.com: 0
A / AAAA Records
- 141.193.213.20 (no PTR)
- 141.193.213.21 (no PTR)
Mail Server IPs
- 52.101.194.17 ↩ mail-ch5pr02cu00401.inbound.protection.outlook.com
- 52.101.41.21 ↩ mail-sj2pr05cu00305.inbound.protection.outlook.com
- 52.101.8.51 ↩ mail-dm1pr04cu00203.inbound.protection.outlook.com
- 52.101.41.24 ↩ mail-sj0pr03cu01600.inbound.protection.outlook.com
- 2a01:111:f403:c902:: ↩ mail-sj2pr05cu00300.inbound.protection.outlook.com
- 2a01:111:f403:c902::5 ↩ mail-sj2pr05cu00505.inbound.protection.outlook.com
- 2a01:111:f403:c801:: ↩ mail-sa9pr02cu00200.inbound.protection.outlook.com
- 2a01:111:f403:f90f:: ↩ mail-sa9pr04cu00100.inbound.protection.outlook.com
SOA Record
Raw SOA
ns43.domaincontrol.com dns.jomax.net 2025091600 28800 7200 604800 600
Primary NS (mname)
ns43.domaincontrol.com
Admin Email (rname)
dns@jomax.net
Serial
2025091600
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s
Nameservers (NS)
ns43.domaincontrol.com
ns44.domaincontrol.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.em.secureserver.net include:8732144.spf06.hubspotemail.net include:spf.protection.outlook.com include:netorg1318849.onmicrosoft.com -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; fo=1; ruf=mailto:[email protected];rua=mailto:[email protected]
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 216 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
16 records- google-site-verification=coip3t8bcFGkzQl71dvNCEQ3hiuzarYr30jSo2MslNc
- google-site-verification=YyIB0bbCGNYt0WvLXqrc41gapWR-GpAWChBFLhT3CXA
- google-gws-recovery-domain-verification=48425682
- google-site-verification=aeHh3ugnhJH7bBuNGZfpKLRvp9u22xBGSNMtcNo-dZI
- google-site-verification=xm6_Fl7kgLGWDjf99HkC8MzRuDD4Ei0i-IcXoVIwjT4
- ms-domain-verification=be753a12-644a-4134-bc2e-bdceaad4910c
- google-site-verification=9Iq8GYzUDkYvJk6rgSrju7bSUOE4V4x7bdiVbtPHBxU
- google-site-verification=FZjF3l4YAx6rtE-uFW5xI2_fKtyp1urt126xqsWAOqw
- facebook-domain-verification=u4xovremmcmqz5i393zcs4nfxckth2
- unbounce488071
- j8j5up1380jne5nb2dj9p0rmr1
- google-site-verification=GDU9nE3ykNef9dWhgOeelbLcl6athGN7b-K_hWD4al4
- SPFv=spf1 include:spf.em.secureserver.net include:8732144.spf06.hubspotemail.net include:spf.protection.outlook.com include:netorg1318849.onmicrosoft.com -all
- up9unc65is0lj8b82lq4u0c63s
- google-site-verification=eG69P91Btw004K3zmMY91Sc7AD3kx9-Ex4KQTr49JyY
- google-site-verification=1BE2QvJ_Aw0oUqcFYvbFZl1GziTMNL_bFybDTk27faY
Full email verification for curbio.com
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