Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
pubmatic.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-21 00:43:01 UTC · ↺ Refresh
MX Hostnames
- pubmatic-com.mail.protection.outlook.com
MX Priorities
- pubmatic-com.mail.protection.outlook.com: 10
A / AAAA Records
- 13.249.91.44 ↩ server-13-249-91-44.jfk52.r.cloudfront.net
- 13.249.91.63 ↩ server-13-249-91-63.jfk52.r.cloudfront.net
- 13.249.91.20
- 13.249.91.100
- 2600:9000:21b8:fa00:1a:89bc:d200:93a1
- 2600:9000:21b8:fe00:1a:89bc:d200:93a1
- 2600:9000:21b8:9c00:1a:89bc:d200:93a1
- 2600:9000:21b8:6c00:1a:89bc:d200:93a1
- 2600:9000:21b8:c000:1a:89bc:d200:93a1
- 2600:9000:21b8:3000:1a:89bc:d200:93a1
- 2600:9000:21b8:5200:1a:89bc:d200:93a1
- 2600:9000:21b8:ae00:1a:89bc:d200:93a1
Mail Server IPs
- 52.101.10.16 ↩ mail-bn6pr21cu00500.inbound.protection.outlook.com
- 52.101.41.58 ↩ mail-sj0pr02cu00102.inbound.protection.outlook.com
- 52.101.10.6 ↩ mail-bn1pr21cu00106.inbound.protection.outlook.com
- 52.101.8.34 ↩ mail-dm2pr04cu00102.inbound.protection.outlook.com
- 2a01:111:f403:c92c::1 ↩ mail-dm6pr03cu00401.inbound.protection.outlook.com
- 2a01:111:f403:f902::1 ↩ mail-bl2pr02cu00101.inbound.protection.outlook.com
- 2a01:111:f403:f90a:: ↩ mail-bn6pr02cu00300.inbound.protection.outlook.com
- 2a01:111:f403:c902::2 ↩ mail-sj0pr03cu01602.inbound.protection.outlook.com
SOA Record
Raw SOA
dns1.p01.nsone.net hostmaster.nsone.net 1647966837 3600 600 604800 3600
Primary NS (mname)
dns1.p01.nsone.net
Admin Email (rname)
hostmaster@nsone.net
Serial
1647966837
Refresh
3600s
Retry
600s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
dns1.p01.nsone.net
dns2.p01.nsone.net
dns3.p01.nsone.net
dns4.p01.nsone.net
SPF Record
✓ Strict (-all)
v=spf1 ip4:18.200.1.103 ip4:52.8.26.248 ip4:162.248.17.59 ip4:74.199.212.72 include:jira.iponweb.net include:_spf-dc41.sapsf.com include:_spf.salesforce.com include:aspmx.pardot.com include:_spf.qualtrics.com include:spf.protection.outlook.com include:spf.tipalti.com include:mail.zendesk.com include:_spf.psm.knowbe4.com include:spf.talpanetwork.com -all
📊 DNS lookups: 10/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1
⚠ p=none — monitoring only, no enforcement
📋 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
11 records- google-site-verification=4x3AESePyWUn3Fyfirac5BT57SUokyyYZhdZ331OmpQ
- google-site-verification=D6vg1pORp0ZtyaeGqXbiAcjDS7_flAW30VL0iClCmgE
- dlr5eopv1stdhivt0a25juv948
- cursor-domain-verification-ch2q0f=5DZkmX5DbpYp7YqaEeojXLqGx
- MS=ms97294344
- cloudflare-verify.pubmatic.com=251111832-549189046
- google-site-verification=Jn4Jtz0fCWQxljwA2-D15cbK1zLSMuLFANANTeAu4UM
- hes=7e94a34b26db97ef237e11205058c0fb
- pardot_214271_*=d91debdeb5dc3f241f55d67d2d6396d8f7f8f6a1791396b9e1f64f56df382f32
- SPFv=spf1 ip4:18.200.1.103 ip4:52.8.26.248 ip4:162.248.17.59 ip4:74.199.212.72 include:jira.iponweb.net include:_spf-dc41.sapsf.com include:_spf.salesforce.com include:aspmx.pardot.com include:_spf.qualtrics.com include:spf.protection.outlook.com include:spf.tipalti.com include:mail.zendesk.com include:_spf.psm.knowbe4.com include:spf.talpanetwork.com -all
- zoom=9694355ca3-06b3a0af34c24f35b9d6441fb0ee7b0e
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 pubmatic.com
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits