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timo-keller.de

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First seen 2026-05-31 · Last seen 2026-05-31 · ok HTTP/1.1 200 276 ms crawled 2026-06-01

DE · 188.68.47.96 · AS197540 netcup GmbH

Reputation 92/100 no dmarc policy

Classifying

HTML metadata

Title
Timo Keller: Research in (Computational) Arithmetic Geometry
Description
Homepage of Timo Keller: research in (computational) arithmetic geometry (abelian varieties, Birch–Swinnerton-Dyer conjecture, modular curves, rational points)
Language
en
Canonical
https://www.timo-keller.de/

Open Graph

url
https://www.timo-keller.de/
title
Timo Keller: Arithmetic Geometry
locale
en_US
description
Research in (computational) arithmetic geometry: abelian varieties, the Birch–Swinnerton-Dyer conjecture, modular curves, rational points.

Technology

Server
nginx

Social

Registration

Updated
2026-05-22
Name servers
  • root-dns.netcup.net.
  • second-dns.netcup.net.
  • third-dns.netcup.net.

DNS records live

NS
  • root-dns.netcup.net
  • second-dns.netcup.net
  • third-dns.netcup.net
MX
  • 10 mail.timo-keller.de
  • 50 mx2f62.netcup.net

Email authentication weak

SPF
v=spf1 -all
strict (-all)
DMARC
not published
DKIM
no key found at common selectors

Certificate (current)

R12
from 2026-04-24 to 2026-07-23
Expires in 49 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 90/100 Checked live page: https://timo-keller.de/

present
  • strict-transport-security
  • content-security-policy
  • x-frame-options
  • x-content-type-options
  • referrer-policy
findings
  • CSP allows unsafe inline scripts/styles
  • missing Permissions Policy
Header values
referrer-policy
same-origin
x-frame-options
DENY
x-content-type-options
nosniff
content-security-policy
default-src 'none'; img-src 'self' 'unsafe-inline'; style-src 'self' 'unsafe-inline'; script-src 'self'; font-src 'self'; base-uri 'none'; frame-ancestors 'none'; form-action 'none'; block-all-mixed-content
strict-transport-security
max-age=15768000; includeSubDomains, max-age=31536000; includeSubDomains; preload

Links to (11)

Linked from (1)