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83
Total
80
DNS
90
Email
73
Security
70
Network
100
Availability
Domainyale.edu
IPv43
IPv64
MX records1
StatusActive
Domain technical report

Yale University

yale.edu

Since its founding in 1701, Yale University has been dedicated to expanding and sharing knowledge, inspiring innovation, and preserving cultural and scientific information for future generations.

Generated: 2026-08-08T17:55:31-05:00 · Cached result

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IPv43
IPv64
MX1
NS5

DiagnosticsMain findings and recommendations

✓
IPv4 (A)30 / 30 pts · Dns

3 IPv4 address(es) detected.

✓
IPv6 (AAAA)10 / 10 pts · Dns

4 IPv6 address(es) detected.

✓
Name server redundancy20 / 20 pts · Dns

5 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 policy0 / 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

15 day(s) remaining.

i
Certificate lifetime6 / 10 pts · Security

Full points require at least 30 days remaining.

i
HTTP security headers12 / 35 pts · Security

3 of 9 evaluated headers detected.

!
PTR reverse DNS0 / 30 pts · Network

PTR not detected.

✓
IPv4 diversity35 / 35 pts · Network

Two or more IPv4 addresses receive full points.

✓
IPv6 connectivity35 / 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

3 record(s)
151.101.2.133
151.101.130.133
151.101.66.133

AAAA

4 record(s)
2a04:4e42::645
2a04:4e42:600::645
2a04:4e42:200::645
2a04:4e42:400::645

CNAME

0 record(s)
—

Not configured

MX

1 record(s)
10 yale-edu.mail.protection.outlook.com.

TXT

53 record(s)
"mdt-site-verification=e6096cdb-e3ce-4195-9cc1-5e53bb029cea"
"docusign=e8f08e07-8b40-4ae4-a8cf-7ce972d4b382"
"MS=ms71696546"
"adobe-idp-site-verification=8bd714ff-27d9-412f-a336-011607c5921d"
"securiti-verification-id=1PLTDJjwuV47eAeftOls50oWNhf3B/eQIB37SneSuOg="
"KVATau69gzhqUOgCyXmfd9cSFFIarSmLDzRIuuICLnF8FgBUcmhtEuWIfd8/R4wkQJh9vIfvF0GJ/s3/S2RBHQ=="
"airtable-verification=bd629e6fdd78d25b886c3131d32f2522"
"wrike-verification=NjQ3NTM0Mjo3MDZiYTQyYmViN2Q4ZDUzYzA2YjUwZmEzNDFjOTBjOTJjZmY2NTdlMGQyZTU5Yjk2NzAxMmYwOTY5MDVmZGVi"
"iContact1458769"
"anthropic-domain-verification-vhzdfe=ofbUZH3TY0KRR5FbkqjAMr3N8"
"sending_domain1108142=0d97d094e155ad3aa47f7970aed92373b498a7340b0f8c714c4c4f23baa7376f"
"google-site-verification=bCh0qosscWOo9bk7i8mSUwbO7xo1L0zhM466fQLYVys"
"e2ma-verification=n69ab"
"brevo-code:d66805a3df437fba6bf7d701b26c2ea6"
"e2ma-verification=tmfcb"
"google-site-verification=fUwYVutFF-kUCTqnDZg7s4lWZSUTOO2k2zHogw_1qYw"
"eWFsZQ=="
"d365mktkey=Nf1xniLZCW9LJtMAKbxJ4QluH18K7RKSYYw5ndrkxlox"
"Dynatrace-site-verification=72c19553-ec2d-4e4f-950c-466938a345c6__gfjfnfbkfm1n41g7rf0n05tqbt"
"atlassian-domain-verification=DNorkJRvlGwYJqdqujeAPnnxXpxnzTnJ20Gyfs5rn8imo6NaMiFye9VpWRxgLqmI"
"00DHo0000038MpA=1TBNx00000005Fp"
"pardot406332=4ac3a1788076ae6f053d313b811664e8c5d2c54dbb5be4d14d6cfffa8cb0b987"
"e2ma-verification=vqzeb"
"F6G3WBWAQ519BOLKY7UQHUB1B25UH7CTZOUT3Z9GC"
"e2ma-verification=pyngb"
"airtable-verification=5faa4d445f2f11d5a2e0d2dff8c4d287"
"e2ma-verification=e39ab"
"_w450pwsqqfrqqw4n7yodv1euryd9akn"
"jamf-site-verification=nh8ZcTKHzvgKfIp0TgFLfg"
"google-site-verification=wAcIxfMZtLARxIU3MA82C9ywf-MODgjwuP2JdcSvs3E"
"d365mktkey=qXRmZD4AqCPHhxJWI7EnhD5InEkYOsYQ6eidVZHnCyAx"
"cisco-ci-domain-verification=43cd3c1de76d9fe0ae0f1db0accb59d4c14ba22243d55d57046fc3fe20b202e0"
"airtable-verification=db05bb0a9dc110aced3b5f08e4757b5d"
"mindmanager-verification=28df50a8f81c11d34096b520343366ad0de6335be17e48baa8ee5d2fa15c3d39"
"anthropic-domain-verification-qq4jmy=xgfwfuTRR16ZOtelI7IbwWRW4"
"atlassian-domain-verification=dMzGvQ6scQb/L03OUQRXV586QJ9lo0steL1LuP46eDG2IF4J7EAD6oo7R5ml35kP"
"e2ma-verification=ea8fb"
"brevo-code:068fa97f1793f7c7bc3b7c779b77f568"
"brevo-code:09357c2630559d902817770f34dbf0b1"
"atlassian-domain-verification=d6trxstBXPKZ-Fn96brt+2GuIbtk29HYhBAdLyXwH1GGOd5OqEaoeX1j7Iako4Y8"
"airtable-verification=dfa71ce641ca4600db5fec1a57c53ef2"
"canva-site-verification=OnZfRkq6vky-DOdzFtAQhg"
"e2ma-verification=cnz"
"google-site-verification=wLNdYe7PcFN1GTfpDeWAT-aPFTWpa_fMn7ZWDw07cuc"
"docusign=a560f5e1-1b15-42e8-9630-f9f375c0d326"
"amazonses:9Ya8iDYeN700mkvk/yE/JXHlH/zQjYAA6+XyWlnms+E="
"airtable-verification=2115523430cd3176e428cebd0c4f6def"
"dropbox-domain-verification=y270qicvbi7s"
"airtable-verification=f429cd2a132a767ba9e2d08c506a8f2c"
"ms-domain-verification=7d4e961a-dc9b-4b56-b436-d3082895899c"
"mailerlite-domain-verification=cdb1198ee33a716cf5d8be0e1234faede0c55a26"
"facebook-domain-verification=4b2v2cdl4pnhet6qnrtzuof73xy5ic"
"v=spf1 include:%{i}._ip.%{h}._ehlo.%{d}._spf.vali.email ~all"

NS

5 record(s)
ns1.bluecatdns.org.
ns1.bluecatdns.com.
PKS1302-102.net.yale.edu.
ns1.bluecatdns.net.
PKS1302-103.net.yale.edu.

SOA

1 record(s)
pks1302-102.net.yale.edu. hostmaster.net.yale.edu. 787602306 1200 180 1209600 3600

CAA

0 record(s)
—

Not configured

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 include:%{i}._ip.%{h}._ehlo.%{d}._spf.vali.email ~all

DMARC

Configured
v=DMARC1; p=quarantine; rua=mailto:dmarc_agg@vali.email,mailto:dmarc.reports@yale.edu; ruf=mailto:dmarc.reports@yale.edu; fo=1

DKIM

Selector selector2
v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC6+vRixoFR23+iDmjlN9wzYz6dPPMuO0Z/ced1OvG5+9VVs7iNX5qRGyfw9ppmzlRW0vI+YESmbBSta+13KjXtQK7EXOlv6bOGXY9XhY3IyWBrrrHuCMztT9sUymuXd2Elp83Z1ZjjqgdZKlmpJfxuW8n7J8HbBoBJlAlTLyRfsQIDAQAB;

Analyzed webpageMetadata and HTTP response

Title and description

Extracted
Title
Yale University
Description
Since its founding in 1701, Yale University has been dedicated to expanding and sharing knowledge, inspiring innovation, and preserving cultural and scientific information for future generations.
Final URL
https://www.yale.edu/
HTTP status
200

HTTP

Status
HTTP/2 200
Final URL
https://www.yale.edu/
Version
3
Server
nginx
X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available
Available
Yes
Issuer
Certainly
CN
yale.edu
Valid from
2026-07-24T23:52:17-05:00
Valid until
2026-08-23T23:52:16-05:00
Days remaining
15
Protocol
TLSv1.2
Cipher
ECDHE-RSA-AES128-GCM-SHA256

Security headers

3 active
✓
HSTSImplemented
—
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
151.101.130.133, 151.101.2.133, 151.101.66.133
104,20 ms
Cloudflare
1.1.1.1
151.101.130.133, 151.101.2.133, 151.101.66.133
75,47 ms
Quad9
9.9.9.9
151.101.130.133, 151.101.2.133, 151.101.66.133
84,01 ms
OpenDNS
208.67.222.222
151.101.130.133, 151.101.2.133, 151.101.66.133
52,17 ms
AdGuard
94.140.14.14
151.101.130.133, 151.101.2.133, 151.101.66.133
52,56 ms

IP, geolocation and ASNAssociated network information

151.101.2.133

No data
success
No
country
region
city
asn
organization
isp

151.101.130.133

No data
success
No
country
region
city
asn
organization
isp

151.101.66.133

No data
success
No
country
region
city
asn
organization
isp

Visitor information

Visitor
ip
216.73.217.62
reverse
country
country_code
region
city
latitude
longitude
isp
organization
asn
timezone
browser
Other
os
Other
language
user_agent
Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
is_bot
Yes
cloudflare
No

SMTPEmail port connectivity

yale-edu.mail.protection.outlook.com

Port 25: Closed/unreachable - 24.3 ms - 
Port 465: Closed/unreachable - 4023.9 ms - 
Port 587: Closed/unreachable - 4014 ms -

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