Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
ems-isd.net
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-17 23:25:07 UTC · ↺ Refresh
MX Hostnames
- emsisd-net0i.mail.protection.outlook.com
MX Priorities
- emsisd-net0i.mail.protection.outlook.com: 0
A / AAAA Records
No A/AAAA records found.
Mail Server IPs
- 52.101.10.6 ↩ mail-bn1pr21cu00106.inbound.protection.outlook.com
- 52.101.41.58 ↩ mail-sj0pr02cu00102.inbound.protection.outlook.com
- 52.101.10.12 ↩ mail-bn1pr21cu00204.inbound.protection.outlook.com
- 52.101.10.16 ↩ mail-bn6pr21cu00500.inbound.protection.outlook.com
- 2a01:111:f403:f902::2 ↩ mail-mn2pr02cu00202.inbound.protection.outlook.com
- 2a01:111:f403:c946::1 ↩ mail-ch1pr04cu00101.inbound.protection.outlook.com
- 2a01:111:f403:c902::1 ↩ mail-sj2pr05cu00401.inbound.protection.outlook.com
- 2a01:111:f403:c902::3 ↩ mail-sj0pr03cu01703.inbound.protection.outlook.com
SOA Record
Raw SOA
ns43.worldnic.com namehost.worldnic.com 125042817 10800 3600 604800 3600
Primary NS (mname)
ns43.worldnic.com
Admin Email (rname)
namehost@worldnic.com
Serial
125042817
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns44.worldnic.com
ns43.worldnic.com
SPF Record
✓ Strict (-all)
v=spf1 ip4:216.213.198.112 ip4:199.36.164.0/22 include:spf.protection.outlook.com include:spf.constantcontact.com include:customerspf.schoolmessenger.com include:_spf.bbnotify.net include:k12insightllc.com -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; sp=none;fo=0;
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
↳ Subdomain policy: none
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ 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- v=a71fcbe9-d317-4cfb-89ef-64bec8a622d2
- adobe-idp-site-verification=8d2265fe927663e5ff967dd53ebc47d9d988dc93a73170e48ebe291b49cc4094
- SPFv=spf1 ip4:216.213.198.112 ip4:199.36.164.0/22 include:spf.protection.outlook.com include:spf.constantcontact.com include:customerspf.schoolmessenger.com include:_spf.bbnotify.net include:k12insightllc.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 ems-isd.net
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits