Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
tridentinfosec.io
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-18 01:30:42 UTC · ↺ Refresh
MX Hostnames
- tridentinfosec-io.mail.protection.outlook.com
MX Priorities
- tridentinfosec-io.mail.protection.outlook.com: 0
A / AAAA Records
- 103.177.225.18 (no PTR)
Mail Server IPs
- 52.101.145.0 ↩ mail-pnzpr01cu00200.inbound.protection.outlook.com
- 52.101.145.2 ↩ mail-pnypr01cu00202.inbound.protection.outlook.com
- 52.101.144.3 ↩ mail-ma0pr01cu01103.inbound.protection.outlook.com
- 52.101.144.0 ↩ mail-ma0pr01cu01000.inbound.protection.outlook.com
- 2a01:111:f403:cc2d:: ↩ mail-pnzpr01cu00200.inbound.protection.outlook.com
- 2a01:111:f403:cc2c:: ↩ mail-ma0pr01cu01000.inbound.protection.outlook.com
- 2a01:111:f403:cc2c::1 ↩ mail-ma0pr01cu01101.inbound.protection.outlook.com
- 2a01:111:f403:cc2d::1 ↩ mail-pnypr01cu00201.inbound.protection.outlook.com
SOA Record
Raw SOA
dns1.bigrock.in vishnummv.gmail.com 2025111901 7200 7200 172800 38400
Primary NS (mname)
dns1.bigrock.in
Admin Email (rname)
vishnummv@gmail.com
Serial
2025111901
Refresh
7200s
Retry
7200s
Expire
172800s
Minimum TTL
38400s
Nameservers (NS)
dns2.bigrock.in
dns3.bigrock.in
dns4.bigrock.in
dns1.bigrock.in
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1😜=none😜ct=100;rua=mailto:[email protected];ruf=mailto:[email protected];ri=86400;fo=1;
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._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
3 records- MS=ms47829009
- SPFv=spf1 include:spf.protection.outlook.com -all
- google-site-verification=_fWf7NB4X55usDIS7iL99nMTcoVMZzRk09_COYVEULQ
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 tridentinfosec.io
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits