DNS Lookup

geogebra.org

geogebra.org 15 ms

A Records (IPv4)

13.226.144.86

13.226.144.83

13.226.144.81

13.226.144.109

MX Records (Mail)

10 aspmx.l.google.com

20 alt1.aspmx.l.google.com

20 alt2.aspmx.l.google.com

30 aspmx2.googlemail.com

30 aspmx3.googlemail.com

NS Records (Nameservers)

ns-1082.awsdns-07.org

ns-1933.awsdns-49.co.uk

ns-380.awsdns-47.com

ns-548.awsdns-04.net

TXT Records

MS=ms75579110

MS=ms92504637

atlassian-domain-verification=hVCRGjM2nyjtM2ihzsp8d/5iMeJYblf/ERARL9bQZtkDE46wGxIZ6EkZnERU/srE

google-site-verification=rXlByKov4KIo4v-tNYMA4-jj4KF5KIxu-Ab8-bnLD20

pwa-site-verification=RocOo-JshdrRAsxgwQBVQlyZmpjf_4V_kmwx-koNSdE=

v=spf1 a include:spf.mailjet.com include:_spf.google.com include:mail.zendesk.com include:8994700.spf03.hubspotemail.net ip4:52.211.214.96 ip4:140.78.116.233 ip4:140.78.116.234 -all

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Security Headers

CSP, HSTS, X-Frame-Options grade for this site

SSL Certificate Checker

Inspect certificate validity, expiry, cipher suite, and chain — supports SNI.

Redirect Checker

Trace the full HTTP redirect chain, flag loops, and surface mixed-content downgrades.

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