21stcentury.com

Observed 2026-07-12T17:53:10.110Z (10h ago). Every field below was attested with an Ed25519 signature at scan time.

Not responding

Runs onCloudflare

Registered withGoDaddy Corporate Domains, LLC

insurance

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

INFRASTRUCTURE MAPwhat 21stcentury.com actually stands on - every host below is a signed observation

21stcentury.com

auth2.dns.rcn.netauth4.dns.rcn.netauth3.dns.rcn.netauth1.dns.rcn.net

rcn.netanswers its DNS

mail.greatemailideas.net

greatemailideas.netreceives its email

HTTPS probe

server_error Server error (5xx) 530 Server Error

HTTP status530

Servercloudflare

TLS protocolHTTP/2

TLS issuernot observed

Behind Cloudflareyes

Response time21 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

MX 1

10mail.greatemailideas.net

TXT 2

v=spf1 include:_spf.rcn.com ~all
v=DNSSEC1; (detected)

NS 4

auth2.dns.rcn.net
auth4.dns.rcn.net
auth3.dns.rcn.net
auth1.dns.rcn.net

SOA 1

master.dns.rcn.net hostmaster.rcn.com

TLS Certificates (0)

None.

Subdomains (0)

None observed.

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 21stcentury.com. It updates itself. It attests a signed observation - not that the site is safe.

<a href="https://domaindrift.io/t/21stcentury.com">
  <img src="https://domaindrift.io/badge/21stcentury.com.svg"
       width="300" height="64" alt="DomainDrift signed observations for 21stcentury.com">
</a>

Ed25519 Receipt

Receipt ID: d51d95e2-528a-48da-9f6f-eaf584a56111
Output Hash: b73851df919c051b040fcc6dd6659d7b32cb10ca5580b06b35581cdcc8b17dd9
Signature: ed25519:f356172c933c75ccd04d43bcca04c384fdaab4357c45519cbfab27c46912a2df33d7ef0e1b3458ab5674d9073f0bcb52475713e6b53a08f2b2e14fdf48f0690d
Public Key: ed25519:d610d74ef18f683e5beb859d241d5e67dff0c122e8928b06bec1c2476f4ba27b
Parent: (genesis)
Plane: fast

Verify this in your browser

Permalink: https://domaindrift.io/t/21stcentury.com