CONTINUOUS INTERNET TELEMETRY24H DRIFT8,411 material changesacross 8,101 domainsDNS DRIFT599 domains changed DNS providertop destination parity.domainsEMAIL DRIFT119 domains switched email providertop destination google.comCERT DRIFT192 domains switched issuing CA24hNOW1,618 curated domains not reachable-1,092 vs yesterdaySITE ERRORS20,548 sites serving errorslast probe · 5xx / 404 / TLSTHROTTLED93,477 throttled or blocked our scanner429 rate-limit / 403 bot-block

concentric.net

Observed Jul 18, 2026, 17:37 UTC (4d 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.

Verify this receipt yourself + Watch this domain
Not responding
Runs onCloudflare
13 subdomains · tranco_100k
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat concentric.net actually stands on - every host below is a signed observation
concentric.net
A / AAAA
204.74.99.100
Cloudflareserves the site
NS
ns-scrm.verizonwireless.comns-tmtr.verizonwireless.comns-twbg.verizonwireless.com
verizonwireless.comanswers its DNS
MX
mx2c28.concentric.commx4c28.concentric.commx3c28.concentric.commx1c28.concentric.com
concentric.comreceives its email

HTTPS probe

server_error Server error (5xx) 521 Server Error
HTTP status521
Servercloudflare
TLS protocolHTTP/2
TLS issuernot observed
Behind Cloudflareyes
Response time2206 ms
DNS resolutionNOERROR

Every field above is part of the same signed observation as the records below. Blank means not observed, never "none".

DNS Records

A 1

  • 204.74.99.100

MX 4

  • 20mx2c28.concentric.com
  • 40mx4c28.concentric.com
  • 30mx3c28.concentric.com
  • 10mx1c28.concentric.com

NS 3

  • ns-scrm.verizonwireless.com
  • ns-tmtr.verizonwireless.com
  • ns-twbg.verizonwireless.com

SOA 1

  • ns-twbg.verizonwireless.com hostmaster.cnc.net

TLS Certificates (0)

None.

Subdomains (13)

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 receipt

Put the receipt on your own site. A live badge showing what DomainDrift observes and signs for concentric.net. It updates itself. It attests a signed observation - not that the site is safe.

DomainDrift signed-observation badge for concentric.net <a href="https://domaindrift.io/t/concentric.net"> <img src="https://domaindrift.io/badge/concentric.net.svg" width="300" height="64" alt="DomainDrift signed observations for concentric.net"> </a>

Ed25519 Receipt

Receipt ID
rcpt_9054a8cbf41135d8
Output Hash
4d8e40ac9ec27b91704d7dc530ee7d5de8b3dc10378a410f4adb3b429b484bab
Signature
ed25519:1b952daebec8789b2ff67ec1d26ddcac2cdf0f979b50ecbe9556b743b624cfff2402b074b2f13858ae23368b159a9cacff6c2f94d5727830f66b120f68bd130d
Public Key
ed25519:7aad40f2d6399c207fe2fc15aade04a78324787a355d36725cc90687f9e10cff
Parent
(genesis)
Plane
fast
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