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Total

DNS

Email

Security

Network

100

Availability

Domaincmu.edu

IPv41

IPv60

MX records5

StatusActive

Domain technical report

Carnegie Mellon University | CMU

cmu.edu

A private, global research university, Carnegie Mellon stands among the world's top educational institutions with its cutting-edge programs and innovations.

Generated: 2026-08-08T18:17:00-05:00 · Cached result

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IPv41

IPv60

MX5

NS3

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

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

✓

SOA record10 / 10 pts · Dns

Authoritative zone record.

✓

DNSSEC chain15 / 15 pts · Dns

DS and DNSKEY detected.

CAA policy0 / 5 pts · Dns

Certificate authority restriction.

✓

DNS propagation10 / 10 pts · Dns

Agreement between public resolvers.

✓

MX records20 / 20 pts · Mail

5 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

163 day(s) remaining.

✓

Certificate lifetime10 / 10 pts · Security

Full points require at least 30 days remaining.

HTTP security headers12 / 35 pts · Security

3 of 9 evaluated headers detected.

✓

PTR reverse DNS30 / 30 pts · Network

PTR: CMU-VIP.ANDREW.CMU.EDU

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/1.1 200 OK

✓

HTTPS final URL20 / 20 pts · Availability

Final URL uses HTTPS.

DNS and emailPublished records and email configuration

A

1 record(s)

128.2.42.10

AAAA

0 record(s)

—

Not configured

CNAME

0 record(s)

—

Not configured

MX

5 record(s)

10 ALT3.ASPMX.L.GOOGLE.COM.
1 ASPMX.L.GOOGLE.COM.
5 ALT1.ASPMX.L.GOOGLE.COM.
5 ALT2.ASPMX.L.GOOGLE.COM.
10 ALT4.ASPMX.L.GOOGLE.COM.

TXT

50 record(s)

"apple-domain-verification=yZrPHuazhdH42CPf"
"[NRDR 34503_IN_TXT_google-site-verification=JopPlnNv9VupQydpE3TiwZAEod-zouxEX0inao6rggg HxtpS+uc1I0HuPBMBaTlCA]"
"[NRDR 34190_IN_TXT_docusign=048da45a-23c6-4f6b-8f96-6dff4fa6b22b AWGRCMvgvpXmHSJ7nxKghg]"
"MS=ms17583017"
"[NRDR 34436_IN_TXT_google-site-verification=MYZf5OssFVvgYQF1snvJdiFbMjHy53WzLrnsVGkgpFU C0YNNkwQ5Qfm8taSZKc+1A]"
"[NRDR 32847_IN_TXT_facebook-domain-verification=vxpo0xkores42yfj9ggcdd2o2d2v2n 9I1LCDr7zb+jK0IoSEFayA]"
"[NRDR 34437_IN_TXT_google-site-verification=m3lUupwhWqjbGCA6JswqWyBi7tkzh-BjbRiYuC6EXTg Or5AmLIb59AN+oiEMjOqoA]"
"[NRDR 16337_IN_LOC_40.26.39.0.N.79.56.36.2.W.283.1.10.10 5PS/aNXhz6qcZ6tfoRdgeQ]"
"r4bgkix7EqRv+dJHKYelMrye44oR+366MsSA0lCP0TOcMK8wfs0bpTMDP1tLTZ66OFh0Qx+ZMLBCeVx0NJ3syQ=="
"[NRDR 33356_IN_TXT_MS=ms17583017 io8/1MnXyp5PTqiijD8s0Q]"
"[NRDR 35455_IN_MX_1.ASPMX.L.GOOGLE.COM. JRKEGqRjzSnACLafB7QQiw]"
"00df4000000231leaa"
"facebook-domain-verification=vxpo0xkores42yfj9ggcdd2o2d2v2n"
"[NRDR 30017_IN_TXT_google-site-verification=O2gyijlOW-8BSOghh0tL_4N1PlWU_qznkYhUA22dLJ0 PiRIS0yTtnNYmTWYpWCCVw]"
"EECD69320F38F645362247248BD675F4"
"google-site-verification=m3lUupwhWqjbGCA6JswqWyBi7tkzh-BjbRiYuC6EXTg"
"google-site-verification=pNbrq7j_EeIowr_Kw1Jfy46bmFWR9p1llXH_leCdLrg"
"[NRDR 34441_IN_TXT_zoho-verification=zb38550127.zmverify.zoho.com sbctKhpo8bhwlNq+f0khtw]"
"[NRDR 36124_IN_TXT_e2ma-verification=fu2 tn9dGsCpd6YZrmWG6O9dqw]"
"ZOOM_verify_FruZuJfdTeW1OOezpsuIVA"
"[NRDR 32936_IN_TXT_r4bgkix7EqRv+dJHKYelMrye44oR+366MsSA0lCP0TOcMK8wfs0bpTMDP1tLTZ66OFh0Qx+ZMLBCeVx0NJ3syQ== tGCEAk5qNOFhWjjp1w58vw]"
"docusign=048da45a-23c6-4f6b-8f96-6dff4fa6b22b"
"[NRDR 33014_IN_TXT_ZOOM_verify_FruZuJfdTeW1OOezpsuIVA +31oybl7gh2i74ky0SLQcg]"
"google-site-verification=JopPlnNv9VupQydpE3TiwZAEod-zouxEX0inao6rggg"
"google-site-verification=O2gyijlOW-8BSOghh0tL_4N1PlWU_qznkYhUA22dLJ0"
"[NRDR 37683_IN_TXT_A8809FFAB54BD9C6F7DFBE92616764D0 1pWIIBS0QK7rR0bt/OqwZg]"
"[NRDR 34438_IN_TXT_google-site-verification=pNbrq7j_EeIowr_Kw1Jfy46bmFWR9p1llXH_leCdLrg eMgkItPzPonrYzRZBOx13w]"
"[NRDR 35458_IN_MX_10.ALT3.ASPMX.L.GOOGLE.COM. lw7k2ZT1H96ItGwU98g8LA]"
"[NRDR 35457_IN_MX_5.ALT2.ASPMX.L.GOOGLE.COM. pzqzxDk39X4PeiVpV+EvZQ]"
"[NRDR AN-23811_IN_A_128.2.42.10 JRwwvtp22mouAVo7Ye6sJQ]"
"[NRDR 37073_IN_TXT_reftab-domain-verification=c24d073b23fed3af77c9e3b40010223f Kmo0sQxn82COz9etYwP/3w]"
"google-site-verification=MYZf5OssFVvgYQF1snvJdiFbMjHy53WzLrnsVGkgpFU"
"[NRDR 35459_IN_MX_10.ALT4.ASPMX.L.GOOGLE.COM. EkBzBKUeTsTJg2w4Ly2bMw]"
"[NRDR 36038_IN_TXT_cisco-ci-domain-verification=5f809f49f9d3ca48d84db537e031b2007011ea11f6410de6a8a02919908675d6 VTvqYpCLdM5K6bM5zRNwDQ]"
"[NRDR 37284_IN_TXT_airtable-verification=878daeee4665d51015a6dda912bbb9f5 GCXTwRluJG0dSxHBUrbFYA]"
"[NRDR 36125_IN_TXT_e2ma-verification=fu2 tn9dGsCpd6YZrmWG6O9dqw]"
"[NRDR 37587_IN_TXT_EECD69320F38F645362247248BD675F4 vdnDjzc5a9LVXuQ6DmgOhA]"
"[NRDR 35456_IN_MX_5.ALT1.ASPMX.L.GOOGLE.COM. /CTPCIrZ0nFHanr+3VJRfw]"
"[NRDR 34068_IN_TXT_atlassian-domain-verification=H4RHVEsTq5YZaRen7VBly2a3AqWhfLMxAL3wBScS8EB0Pg5x1vaPhj3eXsGaUOGi ePUw4Mw9giYZRVzpV/ysvQ]"
"v=spf1 include:_spf.cmu.edu ~all"
"cisco-ci-domain-verification=5f809f49f9d3ca48d84db537e031b2007011ea11f6410de6a8a02919908675d6"
"[NRDR 31057_IN_TXT_00df4000000231leaa QSq9rQj5GCBh30pVnLGMtQ]"
"atlassian-domain-verification=H4RHVEsTq5YZaRen7VBly2a3AqWhfLMxAL3wBScS8EB0Pg5x1vaPhj3eXsGaUOGi"
"reftab-domain-verification=c24d073b23fed3af77c9e3b40010223f"
"[NRDR 34415_IN_TXT_apple-domain-verification=yZrPHuazhdH42CPf dbWBQEISZeHDi/9KkKT96g]"
"A8809FFAB54BD9C6F7DFBE92616764D0"
"zoho-verification=zb38550127.zmverify.zoho.com"
"[NRDR 31504_IN_TXT_v=spf1.include:_spf.cmu.edu.~all jxEj2x9CC1Gu8ePZldY84w]"
"airtable-verification=878daeee4665d51015a6dda912bbb9f5"
"e2ma-verification=fu2"

NS

3 record(s)

NSAUTH3.NET.cmu.edu.
NSAUTH2.NET.cmu.edu.
NSAUTH1.NET.cmu.edu.

SOA

1 record(s)

nsauth-master.net.cmu.edu. host-master.andrew.cmu.edu. 20522516 900 450 3600000 21600

CAA

0 record(s)

—

Not configured

DS

2 record(s)

56259 7 1 585E955D36AB11A225E22B42E713C9BC8B0347B7
56259 7 2 83F3EA220349ECD74852847F838121275FF28F3C0806B853133BCEF6 1E1D8205

DNSKEY

2 record(s)

257 3 7 AwEAAb4MDGFGtRa0qzBcfDSMmVNbDaEKYttU4+xRxVgP3I4gSKYpygiW vwZ5n2z7c45XAbS6PrFB/qCDHdqm2Vn8euWsIgCTjEvzSSYprVY4jVV7 DeNCDAENGRisZCj2vegIRS1fBFRC8d1kZ+wbWIGAp40kfI2N+VFz+sLg fgr3WN0tY3+GowV8K4dpApH3zSCf4FScami/+2RRhLcc0C+cw28zlAhS 3UwAAcT5vSy34ZWUl6wZy3Em7cyZ39D9fwOe0k+mtSfZI/gvxF46xdT0 FSoOZxQcoi4Zzuvs2bAdzL6bFzTYezdwQ8HhJ9ED6HEMsJ2m9PpNSypo FlAxfG8JIk0=
256 3 7 AwEAAa5KgvlTf2Z08bega4tkgY8kS3WOD32maJXkYiOCiHIrne/Ho0am XLf4jBD3ToXkGa5uGzNHEo8uwBCKibC8HyfZNeuddq3CVqJNpW9M4RK+ /f9Zbb9g7u54dYTujCNbJVOi5/UGfgO8p3GWTucA1TFEs9mPoY9oQtas NFChTKoX

RRSIG

7 record(s)

DNSKEY 7 2 21600 20260831182710 20260801174354 6947 cmu.edu. bD0RB9h9fOgpXrGg1/gnk3cSrK8tSUeHvHo4W0Iv+jTesecxmHBdbOFx fB1rvUqeyKIBy35TaxQc5KVFWm8uCkSNGBti6J1gHFvaZqfdZHhxt+pl NgB4+oSh/GsyaP8Cfbhsr6TWKs+B/Rk/s5rERZT91sJnQZ5PnywLxTgs qH8=
DNSKEY 7 2 21600 20260831182710 20260801174354 56259 cmu.edu. gcTnHfjLIFXIdaJgCbAd7wTn3jZDKyYy6yoivPnQ1xndiae0l97BNvr3 t/2aW44zcPjxR1EG9tYqsaTzEQ6F1bETmRbq8lGa5b0EvYEV/iRt9HU4 v1PfWTaZWEdSf8vSlwMsdFpfKPXZaR51T/tCfkhX9mszqCUkFyEtxbSB NbmHZ9CxBIE8uNxgCKHiYVFwbEQAcI45CgnXGxk1v3ahIptCxjiDM+5g soYfRo8OmQSIJsIhOwY5OGHWw3QE665N09HFUDvBEY9Fb+6BOK27JF+z QJlZXQmS7JZscztzXPd3491xpkaC8vGEwVcUI2di/l+eJbthlKfiWrwO iVcEkQ==
TXT 7 2 3600 20260907225509 20260808215509 6947 cmu.edu. T7Bxo5x3MYtjfDh4nLDWtAEREYW5tfxQjqL5+mcN+6mKPqASYi0rzaMT upZtJxJ8G+hhTcwv2oHQtg0go9zPzoZ3RSQ7Rp7eDdNWgo4zU3ZoqfQK CP2QMQ00ow80Z35LxBcgJNcm7T3ZGvihNroUdWEUgjOoN6R4o/WV4A2x Eaw=
MX 7 2 21600 20260828214533 20260729214252 6947 cmu.edu. BS4Z7Iwbu5SRRaoj+/1Fi7tXqEwOcQiQqeYFTXt7n3LQYBcU4tC477cY dklcty7ae1juHLtIIfJV+UIP0FtuDYKP96qHvChROhspycH6fC/qs/sC d3idLJNhFgDy1+NtX8TAmJDdEzRvNZdo49BCJzhZIsFkRW1ZOYc/vj7M XMU=
NS 7 2 21600 20260830030552 20260731030156 6947 cmu.edu. YK5/TSwSOlRksP1tTS6sXX/dh/mzA9PVKDLTcOrQUTXgucP8Bup8Yx8N cVuWrfzFv+eOHlFHcAdGHuiu/lX3jTIp2T1PJ59iqwhjQyLKZ6AoEXp0 6Nc8Zb5q8BQsO7SspYCuEfLmHX7mMFeri6trW1tVqgT59c2UDF3CpTrX NPY=
A 7 2 21600 20260903103544 20260804095247 6947 cmu.edu. YwL4y2TFZwTjjdnd6BdIZBi03h54Ii2S/J54KcyfciOWzFf4J2D6dzLD JA70RytGA3LazM7G7M0gYNJgxGIpi4UMOCXK8BLrlrspdaT6wNmTmJjw RbqEVEUdlGhWBPlUvkHoNoTcjvudCsy+gN6ESXMPWwSCJj0073yS7utH EXI=
DS 13 2 86400 20260814033305 20260807022305 6705 edu. jgWOSxzAif1B2LyOp1G7+gZBCagfR2kOt05GhOWh8nzwPJaflLqA7L5S vgXdBLQ7t5RXQbmTjL+cZm281uDhHg==

NSEC

1 record(s)

2FA.CMU.EDU. A NS SOA MX TXT LOC RRSIG NSEC DNSKEY TYPE65534

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:_spf.cmu.edu ~all

DMARC

Configured

v=DMARC1;p=none;sp=none;rua=mailto:report-dmarc@andrew.cmu.edu

DKIM

Selector k2

v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAv2aC2KjGKLOwTweBY5A9RpjsxaBXR9r7OAU6U8/zn92ivImI75naUujWbItRI/QmL1jy5PWGqLwoUA0b90ObWaLDc+i9MtTNmGeWO009hr20fIxhGg6XBT2kjZ1DTThopSe1nAndsupmcBwlQ5Q6LJ+ZAxLcujnPIxM0ZBLmgpkv8u6RfY4eFP8OLvdAW3oSuB0DyLDigQX4Sj8wBO4YIdQH6AAmBeOsidsKAFNFUCpc3vCxtBDR12U+cBg724l3sBkMQ8evnz6idnqxq9QAVYh8k4kJ+RP+6cqTdy7LjIm8xY/bQNpQIpGUAuDo2DjLcCDun9DAI4Q/3z+Q0o9QuQIDAQAB;

Analyzed webpageMetadata and HTTP response

Title and description

Extracted

Title

Carnegie Mellon University | CMU

Description

A private, global research university, Carnegie Mellon stands among the world's top educational institutions with its cutting-edge programs and innovations.

Final URL

https://www.cmu.edu/

HTTP status

206

HTTP

Status

HTTP/1.1 200 OK

Final URL

https://www.cmu.edu/

Version

Server

nginx

X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available

Yes

Issuer

Internet2

www.cmu.edu

Valid from

2025-12-17T18:00:00-06:00

Valid until

2027-01-18T17:59:59-06:00

Days remaining

163

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

128.2.42.10

48,55 ms

Cloudflare

1.1.1.1

128.2.42.10

81,35 ms

Quad9

9.9.9.9

128.2.42.10

48,94 ms

OpenDNS

208.67.222.222

128.2.42.10

68,34 ms

AdGuard

94.140.14.14

128.2.42.10

81,47 ms

IP, geolocation and ASNAssociated network information

128.2.42.10

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

ALT3.ASPMX.L.GOOGLE.COM

Port 25: Closed/unreachable - 0.8 ms - 
Port 465: Closed/unreachable - 4020.8 ms - 
Port 587: Closed/unreachable - 4014.4 ms -

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