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Total

DNS

Email

Security

Network

Availability

Domaincambridge.org

IPv42

IPv60

MX records2

StatusActive

Domain technical report

503 Service Temporarily Unavailable

cambridge.org

Generated: 2026-08-08T17:39:37-05:00 · Cached result

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IPv42

IPv60

MX2

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 policy0 / 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

62 day(s) remaining.

✓

Certificate lifetime10 / 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 DNS0 / 30 pts · Network

PTR not detected.

✓

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 response0 / 40 pts · Availability

HTTP/2 403

✓

HTTPS final URL20 / 20 pts · Availability

Final URL uses HTTPS.

DNS and emailPublished records and email configuration

A

2 record(s)

104.17.111.190
104.17.110.190

AAAA

0 record(s)

—

Not configured

CNAME

0 record(s)

—

Not configured

MX

2 record(s)

4 eu-smtp-inbound-2.mimecast.com.
4 eu-smtp-inbound-1.mimecast.com.

TXT

46 record(s)

"figma-domain-verification=82306f7d5e6d9b44f70bf7e951c99627e467dcb0111c988d3ae2066031b18983-1755005759"
"teamviewer-sso-verification=db65502554224be3a892d0a1d7d23ac7"
"apple-domain-verification=dJCKMZtNMZrBxvyv"
"apple-domain-verification=0z9Q3j82qURKE0jE"
"google-site-verification=iDXI17Esaf_WqUOMbG7t1tkZ3cD3I2B81texGDyCmLE"
"00D2000000000hs=1TBQt00000001Vd"
"_9acsisu491ieex01chikb1wu70u61ev"
"v=spf1 redirect=390fwuvj._spf._d.mim.ec"
"amazonses:q6HVI+PeonYnqfC7kDzNqCrUyIXQnena/tC1RgTQZ/s="
"anthropic-domain-verification-mae9zt=OrJVGKqpLLCr3R2xm97n1UkaA"
"docusign=8f67c3ac-0e31-428a-b89b-d6c05efbcc57"
"krp4xlxh54n2p0jgnklc2sy826wnbqfd"
"miro-verification=e0eb88c47512f1b3e347014c28cd69d732b8cc38"
"77b755eb-0c8f-462f-9071-e147b4823dba"
"Z8kBemfkazJ2i4ysd4p6BpfEKVVRKFT0hQCLeyk8itVhI7FgQo/fof5BCS1pgLO13FaYp+KaVmX2pPT7/mtD+Q=="
"google-site-verification=N5etRfpe1AcCZMdSJz5sVicQHzzIr9RbU9cQTjQ94vE"
"atlassian-domain-verification=7S7bsIrOwlHLdBG0OLNWITmcgqmnW8uaUKxRjA4McIJx1ThN46eQh2TaacXbCKhR"
"SFMC-XCiRpahbO1482ub4X4SdBpTNt9_QuR4k5vr-azmb"
"amazonses:ULRvjmdH/bCZZFgF/xINBm531pRwaQntnQRX/m4r5Zc="
"knowbe4-site-verification=6f2a12971b44215b655214e401300716"
"formstack-domain-verification=bc1d27a650a1f333058871330e43d4c1"
"atlassian-sending-domain-verification=681c02b7-bef7-4652-a1c3-b5999a7056c2"
"confluent-verification=5cd8b60d-2121-4b7a-8dc9-6c3fb6a7bc43"
"onetrust-domain-verification=e66d1551d1154391a5e51733b7fc58a8"
"56l0x50ygt1fkr23c9npqsrmwqr2cvhb"
"_qzf1ow8akt4j08t4s2mpxnfm03j00ap"
"google-site-verification=-houjDGhv3j4boUHMyT2w-kmHVFMJBopLlqOV9CRtXE"
"MS=ms61882158"
"_7medm2uqul87tj3d47vgw0kjs7tvycm"
"apple-domain-verification=DhDDkLn3rLrZDuNx"
"onetrust-domain-verification=67ea4d2fa6f84245aa04d058118d26ad"
"amazonses:Hk45M0qWK+GZ2iX9XJ0TVVq2mc+DayOePbXsYVp/abQ="
"0c333ae6-6e62-4dd3-bd75-bbbe8c00a9e3"
"google-site-verification=G2cATcZ2EVrpsOVGGF5MmI4kHQzXzEWHQ3MLXp2AmjI"
"google-site-verification=RHYH2O4q7639HXg9OOtkhwU1GoSz2yrwFQ95dmHzArI"
"facebook-domain-verification=nkrm6s56pcmfep9h0lgko47xsxxml5"
"xwwmlgcbfg256thhdv0150228ks7rkzb"
"zoho-verification=zb43177975.zmverify.zoho.com"
"adobe-idp-site-verification=7d354030906008d5dcab28dc74cff0b4c3f868aa68415212c70801597f944dc8"
"have-i-been-pwned-verification=361b42c0181f1c91867b0c7731657e90"
"parkable-domain-verification=tfyMMTd19z2TedD63DPVMyjFILPMgwM4IP7J2elpykE="
"6mhwwb8qmrthfb7qmpjlkhr6w30yrqk7"
"08261f74-adda-45ae-bab0-9b7e8919b7c7"
"amazonses:ivqwfLhOGGWGY27uhxdFOA4LwWOJLR+4cr1nUQ4Guh4="
"_6rpwlgh7ul5lr5zxzlmlb7hpr2ejnqe"
"00D8d0000059NJR=1TBSq00000004jZ"

NS

2 record(s)

lex.ns.cloudflare.com.
nucum.ns.cloudflare.com.

SOA

1 record(s)

lex.ns.cloudflare.com. dns.cloudflare.com. 2411496237 10000 2400 604800 1800

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

1 record(s)

100 10 "s" "x-eduroam:radius.tls" "" _radsec._tcp.roaming.ja.net.

TLSA

0 record(s)

—

Not configured

SSHFP

0 record(s)

—

Not configured

SPF

Configured

v=spf1 redirect=390fwuvj._spf._d.mim.ec

DMARC

Configured

v=DMARC1; p=none; rua=mailto:047acbdc29a7625@rep.dmarcanalyzer.com,mailto:dmarc-admin@cambridge.org; ruf=mailto:047acbdc29a7625@rep.dmarcanalyzer.com,mailto:dmarc-admin@cambridge.org; fo=1;

DKIM

Selector mx

k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCh3DY9K/WXJlMShAJrQnghLFHsVrxdcDm3HyKUQMGtG/PoGWjmBGdJER4ooA5pH0W8RjBkp69JXNmk6YQRd4UsvUKhWyQiSNtycOpZirmWp6WudfOanSffk0FxZ1JeszMP8ObQxRVQHPgcO9rZ+T6cfgOSOl22/qXoohPJEH2xDQIDAQAB

Analyzed webpageMetadata and HTTP response

Title and description

Extracted

Title

503 Service Temporarily Unavailable

Description

Final URL

https://www.cambridge.org/

HTTP status

403

HTTP

Status

HTTP/2 403

Final URL

https://www.cambridge.org/

Version

Server

cloudflare

X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available

Yes

Issuer

Google Trust Services

cambridge.org

Valid from

2026-07-11T23:45:04-05:00

Valid until

2026-10-10T00:45:01-05:00

Days remaining

Protocol

TLSv1.2

Cipher

ECDHE-ECDSA-AES128-GCM-SHA256

Security headers

2 active

—

HSTSNot detected

—

Content Security PolicyNot detected

—

X-Content-Type-OptionsNot detected

✓

X-Frame-OptionsImplemented

✓

Referrer PolicyImplemented

—

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

104.17.110.190, 104.17.111.190

70,98 ms

Cloudflare

1.1.1.1

104.17.110.190, 104.17.111.190

47,33 ms

Quad9

9.9.9.9

104.17.110.190, 104.17.111.190

72,14 ms

OpenDNS

208.67.222.222

104.17.110.190, 104.17.111.190

52,12 ms

AdGuard

94.140.14.14

104.17.110.190, 104.17.111.190

234,57 ms

IP, geolocation and ASNAssociated network information

104.17.111.190

No data

success

country

region

city

asn

organization

isp

104.17.110.190

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

eu-smtp-inbound-2.mimecast.com

Port 25: Closed/unreachable - 30.8 ms - 
Port 465: Closed/unreachable - 4053.4 ms - 
Port 587: Closed/unreachable - 124.8 ms - 220 eu-smtp-inbound-1.mimecast.com ESMTP; Sat, 08 Aug 2026 23:39:37 +0100

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