fdd.org
Observed Jul 19, 2026, 02:10 UTC (18h ago). Every field below was attested with an Ed25519 signature at scan time.
Up right now
Runs onCloudflare
Email byMimecast
Also usesGoogle Search Console
IPv6 · 2 subdomains · tranco_100k
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat fdd.org actually stands on - every host below is a signed observation
fdd.org
A / AAAA
104.20.37.102172.66.171.872606:4700:10::6814:25662606:4700:10::ac42:ab57
Cloudflareserves the site
NS
zita.ns.cloudflare.comdakota.ns.cloudflare.com
cloudflare.comanswers its DNS
MX
us-smtp-inbound-1.mimecast.comus-smtp-inbound-2.mimecast.com
Mimecastreceives its email
HTTPS probe
redirect
Redirecting (3xx) 301 → https://www.fdd.org/
HTTP status301
Servercloudflare
TLS protocolHTTP/2
TLS issuernot observed
Behind Cloudflareyes
Response time103 ms
DNS resolutionNOERROR
Redirect chain
https://www.fdd.org/Every field above is part of the same signed observation as the records below. Blank means not observed, never "none".
DNS Records
A 2
104.20.37.102172.66.171.87
AAAA 2
2606:4700:10::6814:25662606:4700:10::ac42:ab57
MX 2
10us-smtp-inbound-1.mimecast.com10us-smtp-inbound-2.mimecast.com
TXT 8
amazonses:re2z2XdGs3sZDuiOsrkgKjMoBb6jZkGSRxMZ5sL6L48=BF765DFEA0v=spf1 include:us._netblocks.mimecast.com ip4:27.126.146.0/24 ip4:72.35.20.96/27 ip4:74.93.206.57 ip4:103.28.42.0/24 ip4:146.88.28.0/24 ip4:163.47.180.0/22 ip4:203.55.21.0/24 ip4:204.75.142.0/24 ip4:208.70.128.182/24 ip4:209.133.66.218 ip4:216.129.90.0/24 include:createsend.com include:_spf.createsend.com include:spf.protection.outlook.com ~allgoogle-site-verification=7JO5zKzjbX87GpaStn3k6jZmayVwSdbkMy-GMyI5eR8apple-domain-verification=pqinwj1OsoTpVwIGgoogle-site-verification=pudZcLGqy-aNran-VU31zoff0UPYA-WOPYEpOusr1UY0ed1fe018a418f75619de94eca8b27db520026a80ev=DMARC1; p=none;
NS 2
zita.ns.cloudflare.comdakota.ns.cloudflare.com
SOA 1
dakota.ns.cloudflare.com dns.cloudflare.com
TLS Certificates (0)
None.
Subdomains (2)
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 receiptEd25519 Receipt
- Receipt ID
5a49ef1f-161e-401a-84da-e78453a85958- Output Hash
f33dc016753836440bbc82f65f9b31cb93b2e47bf80d3d9bf844dfefda6872c6- Signature
ed25519:942519a4a9ad3a6f04aabec947a69581d5286f652f475e875158f7e4b60ca400f41daca4630734c375a5d8b34decb75eeeee58c82a6a07141d201f7dd8cd3c0d- Public Key
ed25519:7aad40f2d6399c207fe2fc15aade04a78324787a355d36725cc90687f9e10cff- Parent
(genesis)- Plane
- fast