CONTINUOUS INTERNET TELEMETRY24H DRIFT3,168 material changesacross 2,697 domains · -230 vs yesterdayDNS DRIFT26 domains changed DNS providertop destination digicertdns.com + digicertdns.net · -1 vs yesterdayEMAIL DRIFT6 domains switched email providertop destination sendgw.comCERT DRIFT9 domains switched issuing CA24h · +2 vs yesterdayNOW3,328 curated domains not answering-6,390 vs yesterdayERRORS10,953 responded with an errorlast probe · 5xx / 404 / 429 / 40324H DRIFT3,168 material changesacross 2,697 domains · -230 vs yesterdayDNS DRIFT26 domains changed DNS providertop destination digicertdns.com + digicertdns.net · -1 vs yesterdayEMAIL DRIFT6 domains switched email providertop destination sendgw.comCERT DRIFT9 domains switched issuing CA24h · +2 vs yesterdayNOW3,328 curated domains not answering-6,390 vs yesterdayERRORS10,953 responded with an errorlast probe · 5xx / 404 / 429 / 403

pnas.org

Observed 2026-07-12T20:47:33.478Z (6h ago). Every field below was attested with an Ed25519 signature at scan time.

Guarded by a firewall
Runs onCloudflare
Email bySendGrid
Also usesGoogle Search Console
96 subdomains · tranco_5k
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat pnas.org actually stands on - every host below is a signed observation
pnas.org
A / AAAA
104.18.33.155172.64.154.101
Cloudflareserves the site
NS
saanvi.ns.cloudflare.comishaan.ns.cloudflare.com
cloudflare.comanswers its DNS

HTTPS probe

bot_blocked Blocked our probe (WAF / bot protection) 403 blocked by cloudflare - bot protection active
HTTP status403
Servercloudflare
TLS protocolHTTP/2
TLS issuernot observed
Behind Cloudflareyes
Response time105 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 2

  • 104.18.33.155
  • 172.64.154.101

TXT 2

  • google-site-verification=xzMG9SIQIFMkhMg-z1FoxTcDa1owuddQERNtSrl-NQc
  • v=spf1 ip4:65.156.0.0/23 include:sendgrid.net ~all

NS 2

  • saanvi.ns.cloudflare.com
  • ishaan.ns.cloudflare.com

SOA 1

  • ishaan.ns.cloudflare.com dns.cloudflare.com

CAA 10

  • issue ssl.com
  • issuewild digicert.com; cansignhttpexchanges=yes
  • issuewild ssl.com
  • issuewild pki.goog; cansignhttpexchanges=yes
  • issue digicert.com; cansignhttpexchanges=yes
  • issue letsencrypt.org
  • issue pki.goog; cansignhttpexchanges=yes
  • issuewild comodoca.com
  • issuewild letsencrypt.org
  • issue comodoca.com

TLS Certificates (0)

None.

Subdomains (96)

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 pnas.org. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID
3860ce51-bbda-4753-9cfb-a46a3996f4f8
Output Hash
63d4d256a20ed2df4dbab1f7654218be0a27e8afd0097e0f266ae3b639fc439e
Signature
ed25519:6fa2c9576d968bb1e6f4c5f95c8873271df5b73800b648e02bd1fde6b40951cf56c14b5ea6c618d125104452fad958067eba942cb71b4fa2b85e5b4cc85da70b
Public Key
ed25519:d610d74ef18f683e5beb859d241d5e67dff0c122e8928b06bec1c2476f4ba27b
Parent
(genesis)
Plane
fast
Verify this in your browser