xs4all.nl
Observed Jul 24, 2026, 07:04 UTC (1h ago). Every field below was attested with an Ed25519 signature at scan time. Catalog observation, re-checked on rotation — watch it for 5-minute checks.
Up right now
Runs onCloudflare
Registered toKoninklijke KPN N.V
Registered withKPN B.V.
Also usesGoogle Search Console
IPv6 · 12 subdomains · tranco_10k
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat xs4all.nl actually stands on - every host below is a signed observation
xs4all.nl
A / AAAA
99.83.136.15575.2.72.2042600:9000:a504:9080:40c0:d138:ca59:2e3d2600:9000:a400:dede:1a1c:a23f:9ae6:7bbc
Cloudflareserves the site
NS
ns1.kpn.netns11.kpn.net
kpn.netanswers its DNS
MX
mx.kpnmail.nl
kpnmail.nlreceives its email
HTTPS probe
redirect
Redirecting (3xx) 301 → https://www.xs4all.nl:443/
HTTP status301
Servercloudflare
TLS protocolHTTP/2
TLS issuernot observed
Behind Cloudflareyes
Response time1669 ms
DNS resolutionNOERROR
Redirect chain
https://www.xs4all.nl:443/Every field above is part of the same signed observation as the records below. Blank means not observed, never "none".
DNS Records
A 2
99.83.136.15575.2.72.204
AAAA 2
2600:9000:a504:9080:40c0:d138:ca59:2e3d2600:9000:a400:dede:1a1c:a23f:9ae6:7bbc
MX 1
10mx.kpnmail.nl
TXT 6
v=spf1 include:spf.ews.kpnxchange.com ~allgoogle-site-verification=ixk8ILXv-df5AQBAbfJfXpu9EQUFYoHZwjAvpcG5tBEMS=B895DD98732F0DADE7D04A1E53DF0DECBFEF770Fgoogle-site-verification=qHhbnr_ViPAAN13v4NQGHDYCfXwM__O6XS9NJFL1IRIv=DMARC1; p=reject; adkim=r; aspf=r; rua=mailto:dmarc@kpnmail.nlv=DNSSEC1; (detected)
NS 2
ns1.kpn.netns11.kpn.net
SOA 1
ns1.kpn.net zonemaster.kpn.com
CAA 6
issue amazonaws.comissue sectigo.comissuewild letsencrypt.orgissue letsencrypt.orgissue comodoca.comissuewild sectigo.com
TLS Certificates (0)
None.
Subdomains (12)
The proof
Signed at scan time. Check the math yourself. Every line above is part of one signed observation. Re-hash it and check the Ed25519 signature in your own browser; nothing leaves your machine.
Verify this receiptEd25519 Receipt
- Receipt ID
rcpt_9de6211d25ab1ad8- Output Hash
7c20324593cfaf5b120750c25854e2dbb2a7389958834285e0cca6a5a244804f- Signature
ed25519:e019b13336b76aa18e50f551f81e6ed57a2dd3905d2a50fad2d0a8a9581a0b9a179846331e919a62a9094215be15649f0d3b09eed4241326d6435b3d19d7820c- Public Key
ed25519:7aad40f2d6399c207fe2fc15aade04a78324787a355d36725cc90687f9e10cff- Parent
(genesis)- Plane
- fast