Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
ontoproofing.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-21 10:40:19 UTC · ↺ Refresh
MX Hostnames
- us1-smtp-mx2.titanhq.com
- ontoproofing-com.mail.protection.outlook.com
- us1-smtp-mx1.titanhq.com
MX Priorities
- us1-smtp-mx1.titanhq.com: 0
- ontoproofing-com.mail.protection.outlook.com: 10
- us1-smtp-mx2.titanhq.com: 0
A / AAAA Records
- 141.193.213.10
- 141.193.213.11
Mail Server IPs
- 18.218.73.72 ↩ us1-smtp-mx1.titanhq.com
- 18.116.252.179 ↩ us1-smtp-mx1.titanhq.com
- 18.225.12.231 ↩ us1-smtp-mx1.titanhq.com
- 52.101.40.4 ↩ mail-cy5pr03cu00204.inbound.protection.outlook.com
- 52.101.41.3 ↩ mail-sj2pr05cu00103.inbound.protection.outlook.com
- 52.101.9.21 ↩ mail-bl2pr04cu00205.inbound.protection.outlook.com
- 52.101.41.21 ↩ mail-sj2pr05cu00305.inbound.protection.outlook.com
- 2a01:111:f403:c902::7 ↩ mail-sj0pr02cu00107.inbound.protection.outlook.com
- 2a01:111:f403:c92c::4 ↩ mail-dm6pr05cu00404.inbound.protection.outlook.com
- 2a01:111:f403:f902:: ↩ mail-bl2pr04cu00100.inbound.protection.outlook.com
- 2a01:111:f403:c902::2
SOA Record
Raw SOA
ns13.worldnic.com namehost.worldnic.com 126021014 10800 3600 604800 3600
Primary NS (mname)
ns13.worldnic.com
Admin Email (rname)
namehost@worldnic.com
Serial
126021014
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns14.worldnic.com
ns13.worldnic.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; pct=100; 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
6 records- google-site-verification=G-LinvZo9PQB-ZhvsPjTq5aeBreTNktDv5t7Oicbd4E
- google-site-verification=n01fh99Xh_R2Tp81jsxeMX6Ri-DN4CgvTaiDslXSZtY
- adobe-idp-site-verification=5088260d39aa390c88405b7d1dea592934ba00b2796487fe3774f8e280a9c8a7
- google-site-verification=WbB7qc09qv-m5n08BeekyfBpH2cQLzVDW4tPHQUJvY0
- apple-domain-verification=AAxLq8QxrZlB8tEV
- SPFv=spf1 include:spf.protection.outlook.com -all
Free · No signup required
Add email validation to your forms
Block disposable emails, validate MX records, detect role accounts — unlimited, forever free.
<script src="https://check.verifyswift.com/"></script>
One line of code · Works on any site
See demo & docs
Deep verification
Full email verification for ontoproofing.com
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits