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Total

DNS

Email

Security

Network

100

Availability

Domaincert.org

IPv41

IPv60

MX records2

StatusActive

Domain technical report

CERT | CMU Software Engineering Institute

cert.org

The Software Engineering Institute is leading and advancing software and cybersecurity to solve the nation's toughest problems.

Generated: 2026-08-09T06:29:25-05:00 · Cached result

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IPv41

IPv60

MX2

NS4

DiagnosticsMain findings and recommendations

✓

IPv4 (A)30 / 30 pts · Dns

1 IPv4 address(es) detected.

IPv6 (AAAA)0 / 10 pts · Dns

0 IPv6 address(es) detected.

✓

Name server redundancy20 / 20 pts · Dns

4 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

2 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

171 day(s) remaining.

✓

Certificate lifetime10 / 10 pts · Security

Full points require at least 30 days remaining.

HTTP security headers27 / 35 pts · Security

7 of 9 evaluated headers detected.

✓

PTR reverse DNS30 / 30 pts · Network

PTR: www.cert.org

IPv4 diversity20 / 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

1 record(s)

147.72.252.242

AAAA

0 record(s)

—

Not configured

CNAME

0 record(s)

—

Not configured

MX

2 record(s)

10 tilton.sei.cmu.edu.
10 tingley.sei.cmu.edu.

TXT

5 record(s)

"DBCAA5143AC8DA050F83A2DCA34D2135"
"MS=ms99326395"
"GjlKiHz4O+yqufLrRIiCkmyaNeKDsFtlP0EdfJ5Hd0ERRCB3rBFfT0hjRz5KpuVbK7z1iW6Vh6MtnSK/dHi1Lg=="
"google-site-verification=XOhFzgbzrxnwXF_zY4WWTJSkIyRfIjEI8eaOJCx4WiI"
"v=spf1 ip4:147.72.252.0/27 include:spf.protection.office365.us ?all"

NS

4 record(s)

ns-1403.awsdns-47.org.
ns-1794.awsdns-32.co.uk.
ns-916.awsdns-50.net.
ns-28.awsdns-03.com.

SOA

1 record(s)

ns-1403.awsdns-47.org. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400

CAA

3 record(s)

0 issue "emsign.com"
0 issuewild "emsign.com"
0 iodef "mailto:caa-reports@sei.cmu.edu"

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 ip4:147.72.252.0/27 include:spf.protection.office365.us ?all

DMARC

Configured

v=DMARC1; p=none; adkim=r; aspf=r; fo=0; rf=afrf; rua=mailto:brndm82m-aen4zffh@sei.cmu.edu; ruf=mailto:zahuj14e-0jwboxgg@sei.cmu.edu

DKIM

Selector selector1

v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC23mjhZ7TziNXIb3kEmW9K0p0ecDzN40tnHqDx8pR7kZKhCSKkTfBH0XQ7ZbGsniyiDY/v3wP5oVhjeaUUXEc9ojT0oLxF4XNnKFhw+y2SLao+G9m6MLjZKR3c5ajTWXqmQSPC1nRNNvmMLDjAUop5G7jRzsxYRzOO0twhtysXJwIDAQAB;

Analyzed webpageMetadata and HTTP response

Title and description

Extracted

Title

CERT | CMU Software Engineering Institute

Description

The Software Engineering Institute is leading and advancing software and cybersecurity to solve the nation's toughest problems.

Final URL

https://www.sei.cmu.edu/divisions/cert/

HTTP status

206

HTTP

Status

HTTP/2 200

Final URL

https://www.sei.cmu.edu/divisions/cert/

Version

Server

BigIP

X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available

Yes

Issuer

InCommon, LLC

www.cert.org

Valid from

2026-07-12T19:00:00-05:00

Valid until

2027-01-27T17:59:59-06:00

Days remaining

171

Protocol

TLSv1.3

Cipher

TLS_AES_128_GCM_SHA256

Security headers

7 active

✓

HSTSImplemented

✓

Content Security PolicyImplemented

✓

X-Content-Type-OptionsImplemented

✓

X-Frame-OptionsImplemented

✓

Referrer PolicyImplemented

✓

Permissions PolicyImplemented

✓

Cross-Origin-Opener-PolicyImplemented

—

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

147.72.252.242

91,05 ms

Cloudflare

1.1.1.1

147.72.252.242

52,59 ms

Quad9

9.9.9.9

147.72.252.242

106,56 ms

OpenDNS

208.67.222.222

147.72.252.242

73,92 ms

AdGuard

94.140.14.14

147.72.252.242

339,88 ms

IP, geolocation and ASNAssociated network information

147.72.252.242

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

tilton.sei.cmu.edu

Port 25: Closed/unreachable - 8.8 ms - 
Port 465: Closed/unreachable - 4049.6 ms - 
Port 587: Closed/unreachable - 4014 ms -

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