Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
nsula.edu
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-04-04 07:50:17 UTC · ↺ Refresh
MX Hostnames
- nsula-edu.mail.protection.outlook.com
MX Priorities
- nsula-edu.mail.protection.outlook.com: 20
A / AAAA Records
- 107.180.248.240 ↩ dp-b5aa9d681f.dreamhostps.com
Mail Server IPs
- 52.101.10.10 ↩ mail-bn8pr05cu00102.inbound.protection.outlook.com
- 52.101.50.7 ↩ mail-co1pr21cu00207.inbound.protection.outlook.com
- 52.101.194.17 ↩ mail-ch5pr02cu00401.inbound.protection.outlook.com
- 52.101.9.20 ↩ mail-bl0pr02cu00604.inbound.protection.outlook.com
- 2a01:111:f403:c91d::a ↩ mail-co1pr21cu00202.inbound.protection.outlook.com
- 2a01:111:f403:f902::1 ↩ mail-bl2pr02cu00101.inbound.protection.outlook.com
- 2a01:111:f403:f910:: ↩ mail-cy5pr03cu00300.inbound.protection.outlook.com
- 2a01:111:f403:c902::1 ↩ mail-sj2pr05cu00401.inbound.protection.outlook.com
SOA Record
Raw SOA
charles.ns.cloudflare.com dns.cloudflare.com 2400764407 10000 2400 604800 1800
Primary NS (mname)
charles.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2400764407
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
dana.ns.cloudflare.com
charles.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:mh.blackboard.com include:cust-spf.cashnet.com include:servers.mcsv.net include:spf.watermarkinsights.com include:email.hivebrite.com include:spf.mailjet.com include:spf.samanage.com ip4:76.165.208.160 ip4:149.72.146.149 ip4:107.180.248.240 ip4:167.89.91.85 ip4:167.89.95.180 -all
📊 DNS lookups: 8/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; sp=reject; ri=3600; rua=mailto:[email protected],mailto:[email protected];
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected],mailto:[email protected]
↳ Subdomain policy: reject
DKIM Selectors
✓ 5 found
selector1._domainkey
selector2._domainkey
k1._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
9 records- have-i-been-pwned-verification=d338b1c48c7500439608f353b9ef48d9
- solarwinds-service0desk-verification=ff884777f8ca866c9b322e9516d904ed
- SPFv=spf1 include:spf.protection.outlook.com include:mh.blackboard.com include:cust-spf.cashnet.com include:servers.mcsv.net include:spf.watermarkinsights.com include:email.hivebrite.com include:spf.mailjet.com include:spf.samanage.com ip4:76.165.208.160 ip4:149.72.146.149 ip4:107.180.248.240 ip4:167.89.91.85 ip4:167.89.95.180 -all
- JSbJKNYzI5XrqoZUOWnLvCRC3ldTnD7bdmi7gCrPM473UOJ4kzuQKv0yyACItVfhB09Z2OXXuOtPM6N9eJrW2g==
- MS=ms96279372
- adobe-idp-site-verification=c6878c5f-6290-4151-8ead-70398be64f41
- apple-domain-verification=TzSFlkOxf4s1BWox
- ciscocidomainverification=3b96ec7824c45c6b2f18361cf0cbaba1c97b64edc4784d6a7c36ae9118488a4a
- google-site-verification=CLLQgTSiK5PEJ7NCS9LckidLIzgiabeDSpddV7Sm4u8
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 nsula.edu
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits