jhmi.edu

Valid Email Server
Domain Lookup › jhmi.edu

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
jhmi.edu
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-03-28 21:19:47 UTC · ↺ Refresh

MX Hostnames

  • smtp.johnshopkins.edu

MX Priorities

  • smtp.johnshopkins.edu: 10

A / AAAA Records

  • 162.129.193.2 (no PTR)

Mail Server IPs

  • 162.129.199.4 (no PTR)
  • 128.220.38.15 ↩ smtp.johnshopkins.edu

SOA Record

Raw SOA ens1.jhu.edu empty.empty 2014078975 3600 600 1209600 3600
Primary NS (mname)
ens1.jhu.edu
Admin Email (rname)
empty@empty
Serial
2014078975
Refresh
3600s
Retry
600s
Expire
1209600s
Minimum TTL
3600s

Nameservers (NS)

ens1.jhmi.edu
ens1.jhu.edu

SPF Record

✓ Strict (-all)
v=spf1 ip4:128.220.39.0/24 ip4:162.129.199.0/24 ip4:128.220.229.235 ip4:199.91.140.26 ip4:162.129.251.11 ip4:162.129.251.14 ip4:128.220.160.6 ip4:128.220.160.1 ip4:128.220.40.0/24 include:spf.protection.outlook.com include:service-now.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]; ruf=mailto:[email protected];
✓ Reject — strongest protection
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]

DKIM Selectors

✗ None detected

No DKIM records found for common selectors — your provider may use a custom selector name.

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

16 records
  • asv=63178dd616c565ffda049b18f5583af8
  • cloudflare-verify.jhmi.edu 984899877-907558021
  • docusign=c5738b2b-bc80-43bf-9c62-f98b8484fcc6
  • atlassian-domain-verification=v82iuU5jtUo6DLhV8wuZZxOk5KYBZdPh/5H+/GFe2/qw/ulV5gYzSVyg1UvD5xyw
  • ZOOM_verify_5sREa7Z9RhCv5Yeqhzs4ZA
  • docusign=c1820ce2-73da-4a06-9480-b28b1d59ee13
  • docusign=6268e956-ff28-448a-8bfb-59232b17655b
  • google-site-verification=ZL50Gz8eH2y2_T5AVrST3TfYeJhwnIOlvms08JkAmuw
  • anthropic-domain-verification-kvwzp8=HDQBgYemkJZ8mQKSNBu89a5vj
  • vSRVlAzQX/jgP/U4ENB4vjDiQ6wwx0SDbSv+ng9HhI/HGuKa2z7OFa1Vy8dDAVfYdGFvU7GRu6Ypk4eH5pXEIQ==
  • SPFv=spf1 ip4:128.220.39.0/24 ip4:162.129.199.0/24 ip4:128.220.229.235 ip4:199.91.140.26 ip4:162.129.251.11 ip4:162.129.251.14 ip4:128.220.160.6 ip4:128.220.160.1 ip4:128.220.40.0/24 include:spf.protection.outlook.com include:service-now.com -all
  • CyyPrBJbevpp9C-aqxqg
  • vztsOvd1kBzncTL71bFgpcNnjk9Xb4eBkZjdpLMcq889wFUL+Me21u6EfIfQXGrNX2D/pYk0CXss/ku/QX2VqQ==
  • smartsheet-site-validation=nF4oKECaornIDiiXAZ4DqMun1aazur3H
  • MS=ms21014655
  • cisco-ci-domain-verification=55c189f02ef6cd13ebfd799d79e3c1d3b43841278fa404e984ea9f7e211828b2
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 jhmi.edu

SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.

No credit card required
Get 1,000 Free Credits