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Total

DNS

Email

Security

Network

100

Availability

Domainjefferson.edu

IPv42

IPv60

MX records1

StatusActive

Domain technical report

Thomas Jefferson University

jefferson.edu

At Thomas Jefferson University in Philadelphia, PA, we are helping you to redefine what’s possible with innovative and tailored education opportunities.

Generated: 2026-08-11T02:17:52-05:00 · Cached result

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IPv42

IPv60

MX1

NS2

DiagnosticsMain findings and recommendations

✓

IPv4 (A)30 / 30 pts · Dns

2 IPv4 address(es) detected.

IPv6 (AAAA)0 / 10 pts · Dns

0 IPv6 address(es) detected.

✓

Name server redundancy20 / 20 pts · Dns

2 NS record(s); 2 or more required.

✓

SOA record10 / 10 pts · Dns

Authoritative zone record.

DNSSEC chain0 / 15 pts · Dns

Both DS and DNSKEY are required.

✓

CAA policy5 / 5 pts · Dns

Certificate authority restriction.

✓

DNS propagation10 / 10 pts · Dns

Agreement between public resolvers.

✓

MX records20 / 20 pts · Mail

1 MX record(s).

✓

SPF25 / 25 pts · Mail

SPF policy published.

✓

DMARC25 / 25 pts · Mail

DMARC policy published.

✓

DKIM20 / 20 pts · Mail

A DKIM selector was verified.

MTA-STS0 / 5 pts · Mail

Mail transport policy.

TLS-RPT0 / 5 pts · Mail

TLS reporting policy.

✓

Valid TLS certificate55 / 55 pts · Security

17 day(s) remaining.

Certificate lifetime6 / 10 pts · Security

Full points require at least 30 days remaining.

HTTP security headers8 / 35 pts · Security

2 of 9 evaluated headers detected.

✓

PTR reverse DNS30 / 30 pts · Network

PTR: ec2-54-158-183-198.compute-1.amazonaws.com

✓

IPv4 diversity35 / 35 pts · Network

Two or more IPv4 addresses receive full points.

IPv6 connectivity0 / 35 pts · Network

AAAA availability.

✓

DNS resolution40 / 40 pts · Availability

At least one address family must resolve.

✓

HTTP response40 / 40 pts · Availability

HTTP/2 200

✓

HTTPS final URL20 / 20 pts · Availability

Final URL uses HTTPS.

DNS and emailPublished records and email configuration

A

2 record(s)

54.158.183.198
34.206.39.236

AAAA

0 record(s)

—

Not configured

CNAME

0 record(s)

—

Not configured

MX

1 record(s)

5 mail.jefferson.edu.

TXT

25 record(s)

"adobe-sign-verification=3b8b62dc8d793699f8a57796a08119e2"
"knowbe4-site-verification=ee40bf68d459fd60d2f8cc91b9e5f7bd"
"specops-verification-code=f8f071c2-c2f1-4659-ab11-aa726ffb049d"
"dell-technologies-domain-verification=jefferson.edu_d5ae6b5d-875f-495b-82f4-a098bffcccd6_1776087061"
"cisco-ci-domain-verification=7235ed18babfdc23fe461ed2dbc7ef9b4b6f503389dbc22d81957aaf00c10819"
"jamf-site-verification=s08jCEVXnt2qUigAGMJTIA"
"67395508"
"MS=ms71720074"
"cisco-ci-domain-verification=52c5b962d244fb403e1652e2b561fc8ccd95c524a72ed074480c54139d479b44"
"_vxa02cjj61vgt8fla82ux2xd63q392e"
"pexip-portal-domain-verification=9e7491ff-9fe6-459e-ad5b-755597ec307c"
"google-site-verification=WzrM75lsGyzl66vgOvgkKQCfhtFJNZreN4hus3nOOfw"
"8ff06ff49ddf43e6b50b6a35ea8372b9"
"yahoo-verification-key=AhroyhnJWzjyYH3euBg+zfnhxcnYW5jG9Ert46hpuLI="
"google-gws-recovery-domain-verification=65703120"
"ecostruxure-it-verification=6e98e508-e9d1-4ae3-9fea-fee74c6bf187"
"v=spf1 exists:%{i}._i.%{d}._d.espf.agari.com include:%{d}.30.spf-protect.agari.com -all"
"google-site-verification=Vv9mggr2nyjVCLSdN478du1_tjGN8PD0vXJF1fjn0go"
"00D8c000007UaMO=1TBPn0000000Muz"
"domain-verification=70f1d869-71f9-de4c-858f-18c8e03b304f"
"corestream-sfmc-token=SFMC-Upug3Ukf3Cg4B3JC2qWli6Ad8OIdniXDe6_cr4wl"
"airtable-verification=9207319b71a4c4277c19a415ee4498fb"
"apple-domain-verification=95LsOgLo4R2Mun2U"
"MS=ms56094358"
"pexip-ms-tenant-domain-verification=9e7491ff-9fe6-459e-ad5b-755597ec307c"

NS

2 record(s)

ns3.tju.edu.
ns4.jefferson.edu.

SOA

1 record(s)

ns4.jefferson.edu. hostmaster.tju.edu. 2012016058 21600 3600 604800 600

CAA

4 record(s)

0 issue "amazon.com"
0 issuewild "amazon.com"
0 issuewild "sectigo.com"
0 issue "sectigo.com"

DS

0 record(s)

—

Not configured

DNSKEY

0 record(s)

—

Not configured

RRSIG

0 record(s)

—

Not configured

NSEC

0 record(s)

—

Not configured

NSEC3

0 record(s)

—

Not configured

SRV

0 record(s)

—

Not configured

NAPTR

0 record(s)

—

Not configured

TLSA

0 record(s)

—

Not configured

SSHFP

0 record(s)

—

Not configured

SPF

Configured

v=spf1 exists:%{i}._i.%{d}._d.espf.agari.com include:%{d}.30.spf-protect.agari.com -all

DMARC

Configured

v=DMARC1;p=reject;sp=reject;fo=1;pct=100;ri=3600;rua=mailto:thomas-jefferson-univ@rua.agari.com;ruf=mailto:thomas-jefferson-univ@ruf.agari.com

DKIM

Selector selector1

v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCsmTT2wWPrCE9UbjLPvKoU82uh1KWfSI2U0rpWYrEAgAQFohNEYW+tS5aMTEaipY92AkaZcG+4lwYmdEow9GaVKHbBv5UxuKfe10vrUMBts92Glp9QU9YKn+CL+VcxlnQejWmbmNFS5YU9t3lRdEai4ckhYs1B48koQmc2Wvkp6wIDAQAB; n=1024,1453012247,1468737047

Analyzed webpageMetadata and HTTP response

Title and description

Extracted

Title

Thomas Jefferson University

Description

At Thomas Jefferson University in Philadelphia, PA, we are helping you to redefine what’s possible with innovative and tailored education opportunities.

Final URL

https://www.jefferson.edu/

HTTP status

206

HTTP

Status

HTTP/2 200

Final URL

https://www.jefferson.edu/

Version

Server

Apache

X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available

Yes

Issuer

Entrust Limited

jefferson.edu

Valid from

2025-07-27T19:00:00-05:00

Valid until

2026-08-28T18:59:59-05:00

Days remaining

Protocol

TLSv1.3

Cipher

TLS_AES_128_GCM_SHA256

Security headers

2 active

—

HSTSNot detected

—

Content Security PolicyNot detected

✓

X-Content-Type-OptionsImplemented

✓

X-Frame-OptionsImplemented

—

Referrer PolicyNot detected

—

Permissions PolicyNot detected

—

Cross-Origin-Opener-PolicyNot detected

—

Cross-Origin-Embedder-PolicyNot detected

—

Cross-Origin-Resource-PolicyNot detected

DNS propagationComparison across public resolvers

Public resolver comparison

Consistent

✓

Consistent propagation

5 public resolvers queried.

ResolverServerResultLatency

Google

8.8.8.8

34.206.39.236, 54.158.183.198

78,37 ms

Cloudflare

1.1.1.1

34.206.39.236, 54.158.183.198

86,68 ms

Quad9

9.9.9.9

34.206.39.236, 54.158.183.198

104,15 ms

OpenDNS

208.67.222.222

34.206.39.236, 54.158.183.198

69,97 ms

AdGuard

94.140.14.14

34.206.39.236, 54.158.183.198

84,22 ms

IP, geolocation and ASNAssociated network information

54.158.183.198

No data

success

country

region

city

asn

organization

isp

34.206.39.236

No data

success

country

region

city

asn

organization

isp

Visitor information

Visitor

216.73.217.62

reverse

country

country_code

region

city

latitude

longitude

isp

organization

asn

timezone

browser

Other

language

user_agent

Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)

is_bot

Yes

cloudflare

SMTPEmail port connectivity

mail.jefferson.edu

Port 25: Closed/unreachable - 40.8 ms - 
Port 465: Closed/unreachable - 364.7 ms - 
Port 587: Closed/unreachable - 361.3 ms -

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