Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
johnstoncc.edu
Yes
✓ Yes
Barracuda
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-28 15:41:09 UTC · ↺ Refresh
MX Hostnames
- d257716b.ess.barracudanetworks.com
- d257716a.ess.barracudanetworks.com
MX Priorities
- d257716a.ess.barracudanetworks.com: 0
- d257716b.ess.barracudanetworks.com: 1
A / AAAA Records
- 3.209.26.193 ↩ ec2-3-209-26-193.compute-1.amazonaws.com
Mail Server IPs
- 209.222.82.253 ↩ mail.ess.barracuda.com
- 209.222.82.252 ↩ mail.ess.barracuda.com
- 209.222.82.255 ↩ mail.ess.barracuda.com
SOA Record
Raw SOA
ncnoc.ncren.net hostmaster.ncren.net 2026011503 14400 3600 1209600 14400
Primary NS (mname)
ncnoc.ncren.net
Admin Email (rname)
hostmaster@ncren.net
Serial
2026011503
Refresh
14400s
Retry
3600s
Expire
1209600s
Minimum TTL
14400s
Nameservers (NS)
ns-01.mcnc.org
ns-02.mcnc.org
SPF Record
✓ Strict (-all)
v=spf1 include:spf.ess.barracudanetworks.com include:spf.protection.outlook.com include:_spf.qualtrics.com include:sendgrid.net include:mh.blackboard.com include:spf.cfi.org a:smtp.johnstoncc.edu include:_spf.psm.knowbe4.com -all
📊 DNS lookups: 8/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; fo=1; rua=mailto:[email protected]; ruf=mailto:[email protected]
⚠ 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
7 records- SPFv=spf1 include:spf.ess.barracudanetworks.com include:spf.protection.outlook.com include:_spf.qualtrics.com include:sendgrid.net include:mh.blackboard.com include:spf.cfi.org a:smtp.johnstoncc.edu include:_spf.psm.knowbe4.com -all
- google-site-verification=DX8oEns5FII6DtFpeV2S5oxbu3cBXo_VB-dNOIp15Ak
- DMARCv=DMARC1; p=none; fo=1; rua=mailto:[email protected]; ruf=mailto:[email protected]
- MS=90D16055B4958DFB6481B2A5CAF07BC9E599112D
- MS=03995FA1D07B49CD921DD311976EC18C24A1D894
- Angela Moore, 919.209.2020, Johnston CC
- VAATLNKcrNcnTY/W1wH0IwWlIb3wPChUFmyDHK6rVF5RN4bAlZ+HyViDb3l+P8TLVngt73E4mN4OC4oyRglsdA==
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 johnstoncc.edu
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits