astra.is

Observed Jul 24, 2026, 13:59 UTC (19h 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

Email byMicrosoft 365

Secured byLet's Encrypt

Also usesGoogle Search Console

1 subdomain · tranco

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

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

astra.is

A / AAAA

81.15.18.234

unattributedserves the site

ns1.astra.isns2.astra.isa.astra.is

astra.isanswers its DNS

astra-is.mail.protection.outlook.com

Microsoft 365receives its email

TLS

astra.is

Let's Encryptissued its certificate

DNS Records

A 1

81.15.18.234

MX 1

0astra-is.mail.protection.outlook.com

TXT 4

google-site-verification=Pt2l6WrVRr1dkubgsWs_9PsnnmDOZzEvw8hXp8YyQHc
MS=ms35694204
v=spf1 a a:astra.is ip4:81.15.18.0/24 ip4:51.195.188.104 ip4:51.77.119.99 include:spf.protection.outlook.com include:servers.mcsv.net include:myconnectwise.net -all
v=DMARC1; p=reject; pct=100

NS 3

ns1.astra.is
ns2.astra.is
a.astra.is

SOA 1

a.astra.is root.a.astra.is

CAA 1

issuewild "letsencrypt.org"

TLS Certificates (3)

Common Name	Issuer	Expires
`astra.is`	C=US, O=Let's Encrypt, CN=YR1	Fri, 02 Oct 2026 23:53:09 +0000
`YR1`	C=US, O=ISRG, CN=Root YR	Sat, 02 Sep 2028 23:59:59 +0000
`Root YR`	C=US, O=Internet Security Research Group, CN=ISRG Root X1	Thu, 02 Sep 2032 23:59:59 +0000

Subdomains (1)

www.astra.is

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

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

Ed25519 Receipt

Receipt ID: rcpt_2b2599498e784022
Output Hash: 285e92d379328ed45007283d7d420f4609817736851c6f95e97074ccd3ea60d7
Signature: ed25519:788449168f67cc3bfc5f9199254ea94c0f5c422b87d6335974f1d7012e57de0aa9773c69b9117c194eb42ed5afafd517d17782f259d54c480965561f5da5340a
Public Key: ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent: (genesis)
Plane: fast

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