Domain Overview
DNS: โ 2mo ago
Checker: โ 2mo ago
sema.org
Yes
โ Yes
Outlook
No
No
โ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
ยท 2026-03-18 03:05:46 UTC ยท โบ Refresh
MX Hostnames
- sema-org.mail.protection.outlook.com
MX Priorities
- sema-org.mail.protection.outlook.com: 0
A / AAAA Records
- 52.136.123.27 (no PTR)
Mail Server IPs
- 52.101.9.0 โฉ mail-bl2pr02cu00100.inbound.protection.outlook.com
- 52.101.9.14 โฉ mail-bl0pr03cu00206.inbound.protection.outlook.com
- 52.101.194.13 โฉ mail-ch0pr04cu00605.inbound.protection.outlook.com
- 52.101.11.10 โฉ mail-sa9pr03cu00202.inbound.protection.outlook.com
- 2a01:111:f403:f903:: (no PTR)
- 2a01:111:f403:c803:: โฉ mail-bn1pr21cu00200.inbound.protection.outlook.com
- 2a01:111:f403:f90d:: โฉ mail-sn1pr0501cu00200.inbound.protection.outlook.com
- 2a01:111:f403:f907::1 โฉ mail-dm1pr04cu00201.inbound.protection.outlook.com
SOA Record
Raw SOA
mns1.secureserver.net dns.jomax.net 2025112101 28800 7200 604800 86400
Primary NS (mname)
mns1.secureserver.net
Admin Email (rname)
dns@jomax.net
Serial
2025112101
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
86400s
Nameservers (NS)
mns2.secureserver.net
mns01.domaincontrol.com
mns02.domaincontrol.com
mns1.secureserver.net
SPF Record
โ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:sendgrid.net include:_spf.salesforce.com include:email.nimbleams.com -all
๐ DNS lookups: 4/10
โ Hard fail (-all) โ strict enforcement
DMARC Record
โ p=none
v=DMARC1;p=none; rua=mailto:[email protected]; ruf=mailto:[email protected]; pct=100; ri=84600
โ p=none โ monitoring only, no enforcement
๐ SPF alignment: Relaxed
ยท DKIM alignment: Relaxed
๐ง Reports โ mailto:[email protected]
DKIM Selectors
โ 2 found
selector1._domainkey
selector2._domainkey
โ Public key: 216 chars (valid)
โ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
4 records- intacct-esk=2EED9279CE081EC8E06397068D0A1DAA
- spf.congressplus.com
- SPFv=spf1 include:spf.protection.outlook.com include:sendgrid.net include:_spf.salesforce.com include:email.nimbleams.com -all
- google-site-verification=qM8lHUiDz4jhOZ_pchLdjQ2CEMU0UQu4d_uXg21lx0U
Free ยท No signup required
Add email validation to your forms
Block disposable emails, validate MX records, detect role accounts โ unlimited, forever free.
<script src="https://check.verifyswift.com/"></script>
One line of code ยท Works on any site
See demo & docs
Deep verification
Full email verification for sema.org
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits