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Total

DNS

Email

Security

Network

100

Availability

Domainchalmers.se

IPv41

IPv61

MX records1

StatusActive

Domain technical report

Chalmers tekniska högskola

chalmers.se

Varje dag driver vi viktiga samhällsfrågor framåt, testar nya idéer och bidrar till framtidens utveckling.

Generated: 2026-08-09T03:06:30-05:00 · Cached result

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IPv41

IPv61

MX1

NS4

DiagnosticsMain findings and recommendations

✓

IPv4 (A)30 / 30 pts · Dns

1 IPv4 address(es) detected.

✓

IPv6 (AAAA)10 / 10 pts · Dns

1 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 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

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

37 day(s) remaining.

✓

Certificate lifetime10 / 10 pts · Security

Full points require at least 30 days remaining.

HTTP security headers4 / 35 pts · Security

1 of 9 evaluated headers detected.

✓

PTR reverse DNS30 / 30 pts · Network

PTR: www-prod-ha.ita.chalmers.se

IPv4 diversity20 / 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

1 record(s)

129.16.225.208

AAAA

1 record(s)

2001:6b0:2:2009::611

CNAME

0 record(s)

—

Not configured

MX

1 record(s)

10 chalmers-se.mail.protection.outlook.com.

TXT

17 record(s)

"v=spf1 ip4:129.16.226.128/26 ip4:129.16.226.155 ip4:129.16.226.153 ip4:129.16.226.249 ip4:129.16.226.250 ip4:129.16.226.251 ip4:129.16.226.252 ip4:129.16.222.145 ip4:129.16.222.36 ip4:129.16.227.69 ip4:129.16.222.81 ip4:129.16.222.137 " "ip4:129.16.222.107 ip4:129.16.4.104 ip4:129.16.222.112 ?ip4:129.16.0.0/16 include:spf.protection.outlook.com " "ip4:62.181.197.26 ip4:193.75.93.154 ip4:91.123.56.128 include:_spf.ungapped.com include:spf.topdesk.net  include:spf.bngaged.io " "include:auth.msgapp.com -all"
"adobe-idp-site-verification=2f08bb719e96ca4f9b05dde868ad04193eb3ace7052d0cdc1bebcd0183115fb0"
"HARICA-UNAwJdkNljBQp3EtETZ"
"anthropic-domain-verification-rm0dj5=omuFoWAiKUv1ld1RaE2XvLMly"
"UINFO: Chalmers Tekniska Hogskola [sv]"
"UINFO: Chalmers University of Technology [en]"
"IxQ32Cp0vVZHXqLp2pA8M7ySB2BiQVcrf5ECEAXEEP25nH4PbnhVTyLDYDY3/dUH58Gt2SVA5HWpxV/0n3OqbQ=="
"UINFO: Chalmers Tekniska H\195\182gskola (UTF-8) [sv]"
"ZOOM_verify_VzM3LmjDRKajK0r6i4U8Nw"
"apple-domain-verification=MvsPYqcOzN5YzbCH"
"mentimeter-cbc62098-17f2-4a14-986a-fd42319f0835"
"facebook-domain-verification=9d92s277ebot36swusg8xt09am32zh"
"google-site-verification=oF0feLOFPGBIp7_IyITWLdXTKcGDXbc4CbPGH2qu-z8"
"MS=ms47016442"
"mindmanager-verification=21d5ed4f63465e42d1177116f4cc2b85eed35edebc0a35c829f145a5d47221e2"
"autodesk-domain-verification=Ql85fr_zPEn0Jyb0OyNf"
"UINFO: Chalmers Tekniska H\246gskola (ISO-8859-1) [sv]"

NS

4 record(s)

ns3.chalmers.se.
sunic.sunet.se.
ns2.chalmers.se.
ns1.chalmers.se.

SOA

1 record(s)

ns1.chalmers.se. cth-nic.chalmers.se. 260806124 14400 3600 1814400 300

CAA

0 record(s)

—

Not configured

DS

1 record(s)

61013 13 2 5750B27B4CAFC5C94F42DACE5A6AFFC1AF647E57F9F6813038A524C9 94573074

DNSKEY

2 record(s)

256 3 13 JdxTsR5fqCohOA65PulHEna52mXZO/XEjJ7H6bHGGG8mI2QQOaBA/m3n zdsdUK+Aj98+HXqkzehtcYazx+UylQ==
257 3 13 +GPNkCz/5dMOWhWLpCbw3yxqY3Bm4KmdEk6bDJJKoVxAHO+EDa9TFUrL LGN9NDEKJ7TTQZ4QGMxYhUlMP6iOGg==

RRSIG

3 record(s)

DS 8 2 3600 20260823031137 20260809014137 9573 se. S2qZhueZVySTGp+oE4jP5JhEmWQRED6sp8yMGBVoQV+1tUa1hTiFTyAQ IPcQXkxml/l2L0G0n4IsOHmaY89rkeyq5vYQ0S8k8VQVJkdoA06rbPBh WrvqSFJYja81qxRyyHpcu9LiwAMqHozwsrKd2Pot0+IAv/4hgMVOQsnj ymDwzQYR6wG3y9Z3BLKOb596pxBwoEMtvlTU1U7IM2nZmreCcIKViSei 8e0M/zODfzijZ1YJCRm0xKSfEUBIBNwojKJLAlzaffFA0j7V70sLsSKB 3RjIUzEyOpwB3/OiUQC2PhgDlRkLYBes1bjtaBRkfDYFBakMAvpdhBoZ ynDx2A==
MX 13 2 3600 20260903023751 20260804022127 19327 chalmers.se. 4JGRX5UkgrrW2r/QUkS8qZ9uRRME/9KhHd6tzCZJcL4IaE/LoRnvgeLD jvDqIOHyk8JOjEDiSePZT2iz5vrnag==
NS 13 2 86400 20260903040716 20260804040014 19327 chalmers.se. 9wDckb0SKf9lI0PR/+RnuNxaOMpcQH+WDTL+MgjnPTLZxhfZkJPfD9ux IAkfqsSapNPUZYKjw7hZXKhVtRpDUg==

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 ip4:129.16.226.128/26 ip4:129.16.226.155 ip4:129.16.226.153 ip4:129.16.226.249 ip4:129.16.226.250 ip4:129.16.226.251 ip4:129.16.226.252 ip4:129.16.222.145 ip4:129.16.222.36 ip4:129.16.227.69 ip4:129.16.222.81 ip4:129.16.222.137 ip4:129.16.222.107 ip4:129.16.4.104 ip4:129.16.222.112 ?ip4:129.16.0.0/16 include:spf.protection.outlook.com ip4:62.181.197.26 ip4:193.75.93.154 ip4:91.123.56.128 include:_spf.ungapped.com include:spf.topdesk.net  include:spf.bngaged.io include:auth.msgapp.com -all

DMARC

Configured

v=DMARC1; p=none

DKIM

Selector selector1

v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA3tO8knf+875wqgWQIUlt3MDaO9Ayczty5xQuX8J/DSIEPQaZ3ebt7Zr5yyAG2dumwaJNeB7qQZ3PFx/m9A/bdmMfZO/PNLqqIRiya8zKh+cby9l6d6YcZFhCMwfwE/jzmCWQei99nIL5T5SEVa/iBWXlpAF9oPxYmvbo3V73ojOPS11fHylt9pfec3hG1yj0rRjwJYpE2i84J8CZPJ2MVzcoOJnHX8LZue9vw4SHfxgMTKUs2m5fjUMB+7rO7CT8hcScYBZWM+qz6aJlxDejrMhw5uOQWwtRiu/UaQI3DR4mQ4F8bXYzYm7ahFVWD3rYRul4tSqb1/hZJOH4HEVSPQIDAQAB;

Analyzed webpageMetadata and HTTP response

Title and description

Extracted

Title

Chalmers tekniska högskola

Description

Varje dag driver vi viktiga samhällsfrågor framåt, testar nya idéer och bidrar till framtidens utveckling.

Final URL

https://www.chalmers.se/

HTTP status

200

HTTP

Status

HTTP/2 200

Final URL

https://www.chalmers.se/

Version

Server

nginx/1.20.1

X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available

Yes

Issuer

Let's Encrypt

www.chalmers.se

Valid from

2026-06-17T20:00:55-05:00

Valid until

2026-09-15T20:00:54-05:00

Days remaining

Protocol

TLSv1.3

Cipher

TLS_AES_256_GCM_SHA384

Security headers

1 active

✓

HSTSImplemented

—

Content Security PolicyNot detected

—

X-Content-Type-OptionsNot detected

—

X-Frame-OptionsNot detected

—

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

129.16.225.208

34,91 ms

Cloudflare

1.1.1.1

129.16.225.208

286,66 ms

Quad9

9.9.9.9

129.16.225.208

311,08 ms

OpenDNS

208.67.222.222

129.16.225.208

276,50 ms

AdGuard

94.140.14.14

129.16.225.208

159,58 ms

IP, geolocation and ASNAssociated network information

129.16.225.208

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

chalmers-se.mail.protection.outlook.com

Port 25: Closed/unreachable - 35.4 ms - 
Port 465: Closed/unreachable - 4042.5 ms - 
Port 587: Closed/unreachable - 4042.2 ms -

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