isc.upenn.edu

Valid Email Server
Domain Lookup › isc.upenn.edu
Live data — DNS records and disposable check were just fetched and saved.

Domain Overview

DNS: ⚡ live Checker: ⚡ live
isc.upenn.edu
Yes
✓ Yes
Proofpoint
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-03-17 20:02:37 UTC · ↺ Refresh

MX Hostnames

  • mxa-00390e01.gslb.pphosted.com
  • mxb-00390e01.gslb.pphosted.com

MX Priorities

  • mxb-00390e01.gslb.pphosted.com: 10
  • mxa-00390e01.gslb.pphosted.com: 10

A / AAAA Records

  • 23.185.0.4 (no PTR)
  • 2620:12a:8001::4 (no PTR)
  • 2620:12a:8000::4 (no PTR)

Mail Server IPs

  • 148.163.137.158 ↩ mx0b-00390e01.pphosted.com

SOA Record

No SOA record found.

Nameservers (NS)

No nameservers found.

SPF Record

✓ Soft Fail (~all)
v=spf1 include:%{ir}.%{v}.%{d}.spf.has.pphosted.com include:spf.protection.outlook.com include:spf.penno365.isc.upenn.edu include:amazonses.com include:e2ma.net ~all
📊 DNS lookups: 5/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

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

6 records
  • MS=1A4299B30471EBAD579A1C63ABBCD541E7053E17
  • smartsheet-site-validation=3cyORlSkotEL6-pvmlDSgJIrclifYkpF
  • google-site-verification=CdD-btecaJLwb9v3H9lENIswjPGhrEmT8AJKI5IppFo
  • SPFv=spf1 include:%{ir}.%{v}.%{d}.spf.has.pphosted.com include:spf.protection.outlook.com include:spf.penno365.isc.upenn.edu include:amazonses.com include:e2ma.net ~all
  • MS=ms39823632
  • e2ma-verification=dzobb
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 isc.upenn.edu

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

No credit card required
Get 1,000 Free Credits