a.co

Observed Jul 22, 2026, 20:57 UTC (1d 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

Up right now

Runs onCloudflare

1 subdomain · tranco_5k

Every line above is a signed observation. Check the math at the bottom of the page.

INFRASTRUCTURE MAPwhat a.co actually stands on - every host below is a signed observation

a.co

A / AAAA

98.87.170.844.215.138.8898.87.170.202

Cloudflareserves the site

pdns2.ultradns.netpdns6.ultradns.co.ukpdns5.ultradns.infopdns3.ultradns.org+2 more

ultradns.net + ultradns.co.uk + moreanswers its DNS

HTTPS probe

redirect Redirecting (3xx) 302 → http://www.amazon.com/

HTTP status302

Servercloudflare

TLS protocolHTTP/2

TLS issuernot observed

Behind Cloudflareyes

Response time1825 ms

DNS resolutionNOERROR

Redirect chain

http://www.amazon.com/

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

DNS Records

A 3

98.87.170.8
44.215.138.88
98.87.170.202

TXT 1

v=spf1 -all

NS 6

pdns2.ultradns.net
pdns6.ultradns.co.uk
pdns5.ultradns.info
pdns3.ultradns.org
pdns4.ultradns.org
pdns1.ultradns.net

SOA 1

dns-external-master.amazon.com root.amazon.com

TLS Certificates (0)

None.

Subdomains (1)

www.a.co

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

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

Ed25519 Receipt

Receipt ID: rcpt_b0ddb8a11dc1dd44
Output Hash: 36ef09af237cc4fec62e0b62f2680067ff66551f92a07f207c6612cef603701f
Signature: ed25519:af691be0bba8166913e89083866a66165ac2520e6848f7ccf29eaa0e14d331a99da1211f97ce534ac44c4bad21163c319a3c0d03d5846cafe9ad173fd2918b06
Public Key: ed25519:7aad40f2d6399c207fe2fc15aade04a78324787a355d36725cc90687f9e10cff
Parent: (genesis)
Plane: fast

Verify this in your browser

Permalink: https://domaindrift.io/t/a.co