block-this.com

Observed Aug 11, 2026, 06:57 UTC (2d ago). Every field below was attested with an Ed25519 signature at scan time.

This reading of block-this.com was taken 2d ago

block-this.com is on the survey sweep, which works its way across the whole catalog rather than returning to one name on a schedule. Putting block-this.com under watch moves it to the fast lane, where DomainDrift re-checks it about every 5 minutes and signs each reading, so a change becomes a dated event within minutes instead of waiting for the sweep to come round.

Watch block-this.com Watching a domain needs a DRM3 account. The reading above stays free and public either way.
Up right now
Runs onCloudflare
Email byMicrosoft 365
Secured byLet's Encrypt
IPv6 · domcop
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat block-this.com actually stands on - every host below is a signed observation
block-this.com
A / AAAA
104.21.42.187172.67.208.922606:4700:3033::ac43:d05c2606:4700:3031::6815:2abb
Cloudflareserves the site
NS
aleena.ns.cloudflare.comcamilo.ns.cloudflare.com
cloudflare.comanswers its DNS
MX
blockthis-com01c.mail.protection.outlook.com
Microsoft 365receives its email
TLS
block-this.com
Let's Encryptissued its certificate

DNS Records

A 2

  • 104.21.42.187
  • 172.67.208.92

AAAA 2

  • 2606:4700:3033::ac43:d05c
  • 2606:4700:3031::6815:2abb

MX 1

  • 0blockthis-com01c.mail.protection.outlook.com

TXT 2

  • MS=ms36721193
  • v=spf1 include:spf.protection.outlook.com ~all

NS 2

  • aleena.ns.cloudflare.com
  • camilo.ns.cloudflare.com

SOA 1

  • aleena.ns.cloudflare.com dns.cloudflare.com

TLS Certificates (4)

Common NameIssuerExpires
block-this.com C=US, O=Let's Encrypt, CN=YE1 Sun, 01 Nov 2026 18:15:50 +0000
YE1 C=US, O=ISRG, CN=Root YE Sat, 02 Sep 2028 23:59:59 +0000
Root YE C=US, O=Internet Security Research Group, CN=ISRG Root X2 Thu, 02 Sep 2032 23:59:59 +0000
ISRG Root X2 C=US, O=Internet Security Research Group, CN=ISRG Root X1 Thu, 02 Sep 2032 23:59:59 +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 receipt

Ed25519 Receipt

Receipt ID
rcpt_1910d5d2c86476e9
Output Hash
724ecee3630b09ae0da3fd4b3bc4f28209aec88fa095fc9cf4a31e340a11c255
Signature
ed25519:599952fb7fe3811cee52e16a07f8cfe75dc7ce2ddd99ce39fe366ab4bf151a3f1f6c14b3e4f8cb6ffc623019eb138c2a7e3a271ff0232e3cf80a64edd7a13d0b
Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent
(genesis)
Plane
fast
Verify this in your browser
CONTINUOUS INTERNET TELEMETRY24H DRIFT47,550 material changesacross 45,494 domains · 24h to ~80m ago · +1,680 vs yesterdayROTATION65 domains moved DNS from koaladns.com to magpiedns.com, 64 moved backa rotation loop, not a migration · 24hCERT DRIFT1 domains switched issuing CA24hREGISTRAR DRIFT2 changed registrar24hNOW495 curated domains not reachablelast probe, steadySITE ERRORS36,449 sites serving errorslast probe · 5xx / 404 / TLSBOT DEFENSEbot defense observed on 115,811 sites429 rate-limit / 403 bot-block, a posture signal