black4k.com
Observed Aug 16, 2026, 15:18 UTC (18h 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
CloudflareSecured byGoogle Trust Services
Google Trust ServicesRegistered withDanesco Trading Ltd.
IPv6 · tranco
Every line above is a signed observation. Check the math at the bottom of the page.
DRIFT
Steady. No change on record for black4k.com in the last day; this reading matches the one before it. The steady record is signed like every other reading. Watch it to catch the next move the moment it lands.
INFRASTRUCTURE MAPwhat black4k.com actually stands on - every host below is a signed observation
black4k.com
A / AAAA
172.67.132.222104.21.5.352606:4700:3037::6815:5232606:4700:3030::ac43:84de
Cloudflareserves the site
NS
jobs.ns.cloudflare.comserena.ns.cloudflare.com
cloudflare.comanswers its DNS
MX
mail.black4k.commail2.black4k.com
black4k.comreceives its email
TLS
black4k.com
Google Trust Servicesissued its certificate
DNS Records
A 2
172.67.132.222104.21.5.35
AAAA 2
2606:4700:3037::6815:5232606:4700:3030::ac43:84de
MX 2
10mail.black4k.com20mail2.black4k.com
NS 2
jobs.ns.cloudflare.comserena.ns.cloudflare.com
SOA 1
jobs.ns.cloudflare.com dns.cloudflare.com
TLS Certificates (3)
| Common Name | Issuer | Expires |
|---|---|---|
black4k.com |
C=US, O=Google Trust Services, CN=WE1 | Fri, 09 Oct 2026 11:22:06 +0000 |
WE1 |
C=US, O=Google Trust Services LLC, CN=GTS Root R4 | Tue, 20 Feb 2029 14:00:00 +0000 |
GTS Root R4 |
C=BE, O=GlobalSign nv-sa, 2.5.4.11=Root CA, CN=GlobalSign Root CA | Fri, 28 Jan 2028 00:00:42 +0000 |
Subdomains (0)
None observed.
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; the only network request the check makes is for the published public keys.
Verify this receiptEd25519 Receipt
- Receipt ID
rcpt_2f509a746f422c5a- Output Hash
4ae05424c47c20d05697700b4fb2b43ab0732a1ba0895c5d72598ce49d17fcc0- Signature
ed25519:f5ca44045e822d879e2e5c642c20d3cc0a3940350bb325a3283fa4b36f604e2c701aaf9764a7a67a49728f485354eba4efaddf6855025dd60e7a93f057d1b70d- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast