open-std.org
Observed Jul 19, 2026, 10:53 UTC (1d ago). Every field below was attested with an Ed25519 signature at scan time.
Up right now
Runs onCloudflare
1 subdomain · tranco_100k
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat open-std.org actually stands on - every host below is a signed observation
open-std.org
A / AAAA
192.38.78.170
Cloudflareserves the site
NS
ns02.one.comns01.one.com
one.comanswers its DNS
MX
www5.open-std.org
open-std.orgreceives its email
HTTPS probe
ok
Responding normally (2xx) 200 OK
HTTP status200
Servercloudflare
TLS protocolHTTP/2
TLS issuernot observed
Behind Cloudflareyes
Response time455 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
192.38.78.170
MX 1
5www5.open-std.org
TXT 2
v=spf1 mx a:open-std.org a:www7.open-std.org a:keld1.klid.dk ~allv=DNSSEC1; (detected)
NS 2
ns02.one.comns01.one.com
SOA 1
ns01.one.com hostmaster.one.com
TLS Certificates (0)
None.
Subdomains (1)
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
d741230e-7bc5-428d-acdc-300660e4ac6a- Output Hash
cb53846236835a72554695cad9d7eb182971feafdab769e5301eb9102862dadc- Signature
ed25519:b466e776480a8f66a8613e38cc5b31078e95cb88a787dc3f577b5b3c3f9952241e55468d604e0cb23531283219da38e55c03a5a35e6353e0a3877297f0aad200- Public Key
ed25519:7aad40f2d6399c207fe2fc15aade04a78324787a355d36725cc90687f9e10cff- Parent
(genesis)- Plane
- fast