CONTINUOUS INTERNET TELEMETRY24H DRIFT2,143 material changesacross 1,937 domains · -408 vs yesterdayDNS DRIFT15 domains changed DNS providertop destination cloudflare.com · -1 vs yesterdayEMAIL DRIFT5 domains switched email providertop destination google.comCERT DRIFT1 domains switched issuing CA24h · -4 vs yesterdayNOW3,391 curated domains not answeringlast probe, steadyERRORS10,885 responded with an errorlast probe · 5xx / 404 / 429 / 40324H DRIFT2,143 material changesacross 1,937 domains · -408 vs yesterdayDNS DRIFT15 domains changed DNS providertop destination cloudflare.com · -1 vs yesterdayEMAIL DRIFT5 domains switched email providertop destination google.comCERT DRIFT1 domains switched issuing CA24h · -4 vs yesterdayNOW3,391 curated domains not answeringlast probe, steadyERRORS10,885 responded with an errorlast probe · 5xx / 404 / 429 / 403

repligen.com

Observed 2026-07-13T17:17:24.959Z (13h ago). Every field below was attested with an Ed25519 signature at scan time.

Up right now
Runs onCloudflare
Email byMimecast
Registered withNetwork Solutions, LLC
Also usesGoogle Search ConsoleAtlassian
IPv6 · 6 subdomains · pharma_biotech
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat repligen.com actually stands on - every host below is a signed observation
repligen.com
A / AAAA
172.66.175.23104.20.22.2522606:4700:10::ac42:af172606:4700:10::6814:16fc
Cloudflareserves the site
NS
harvey.ns.cloudflare.comholly.ns.cloudflare.com
cloudflare.comanswers its DNS
MX
us-smtp-inbound-2.mimecast.comus-smtp-inbound-1.mimecast.com
Mimecastreceives its email

HTTPS probe

redirect Redirecting (3xx) 301 → https://www.repligen.com/
HTTP status301
Servercloudflare
TLS protocolHTTP/2
TLS issuernot observed
Behind Cloudflareyes
Response time1023 ms
DNS resolutionNOERROR
Redirect chain
https://www.repligen.com/

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

DNS Records

A 2

  • 172.66.175.23
  • 104.20.22.252

AAAA 2

  • 2606:4700:10::ac42:af17
  • 2606:4700:10::6814:16fc

MX 2

  • 10us-smtp-inbound-2.mimecast.com
  • 10us-smtp-inbound-1.mimecast.com

TXT 13

  • google-site-verification=eVjpkebVwnUO4RssTUM_YUjuwTvaOsftuhaonuaRTMc
  • 00da0000000jtwhmaw
  • smartsheet-site-validation=UdP2mQeHk7UmpyIVaA5lnBGRCpFRXg7-
  • v=spf1 redirect=9kf4psle._spf._d.mim.ec
  • ca3-879e65a085bc4ac29ffcf425d6917763
  • ilSntCBhtvAlcbMO9fPuwfNxZ6J2fPAMmvJTpKTK3zchRb6PqhS4ny8fjRsVqbBUSvIItVSTzlB4DP/CVmmV5w==
  • google-site-verification=bzHu_q102Lo-McDu-bxkiEDodheyICu5v_-A24Kb7vI
  • atlassian-domain-verification=2MdccO9NN9OOkxTi8cuMuXsx4XIYMiUx0YNFanKzC3tru2fQAEowBZThxy9Stgah
  • pardot463902=db5332d23c847ef243916e1ffd87d3b2c99d263c5aec6ca31914dcd4a6d589ac
  • google-site-verification=bCasN0SUFNBDO-Jvlkhg3k_A06_9-tcEtoIYqBQyjac

NS 2

  • harvey.ns.cloudflare.com
  • holly.ns.cloudflare.com

SOA 1

  • harvey.ns.cloudflare.com dns.cloudflare.com

TLS Certificates (0)

None.

Subdomains (6)

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 repligen.com. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID
0a8933ce-ff38-4494-93e1-5d09c0f016d8
Output Hash
f83454c557caac741da229c9c663f108a4338501bd68af43322b9df74e96a7f4
Signature
ed25519:cc85a0c72317e847ea69df7bcdb4ecca2d4d7451ebcfea8d0ef5de5fccff3cabe01c1ed85f7e513dece895f29f75aaa7b61c88d6d07de603bf9dc51674e1dc05
Public Key
ed25519:d610d74ef18f683e5beb859d241d5e67dff0c122e8928b06bec1c2476f4ba27b
Parent
(genesis)
Plane
fast
Verify this in your browser