zulip.com

Observed Jul 24, 2026, 17:41 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

Runs onAmazon

Email byGoogle Workspace

Secured byAmazon

Registered withNameCheap, Inc.

Also usesGoogle Search Console

IPv6 · ecommerce

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

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

zulip.com

A / AAAA

100.48.252.14954.197.121.3552.203.216.11354.80.230.244+8 more

Amazonserves the site

ns-1206.awsdns-22.orgns-1854.awsdns-39.co.ukns-427.awsdns-53.comns-806.awsdns-36.net

awsdns-22.org + awsdns-39.co.uk + moreanswers its DNS

aspmx.l.google.comaspmx2.googlemail.comaspmx3.googlemail.comalt1.aspmx.l.google.com+1 more

Google Workspacereceives its email

TLS

zulip.com

Amazonissued its certificate

DNS Records

A 6

100.48.252.149
54.197.121.35
52.203.216.113
54.80.230.244
54.84.248.153
184.73.50.244

AAAA 6

2600:1f18:414:db32:350f:ab40:beaf:8797
2600:1f18:414:db64:f64c:12ab:9042:d3ba
2600:1f18:414:db48:4eed:93c2:4619:299
2600:1f18:414:db16:3939:2467:ebd:45e6
2600:1f18:414:db80:3915:9cc:2c69:1a2d
2600:1f18:414:db00:5e60:9ec4:827c:f7c2

MX 5

1aspmx.l.google.com
10aspmx2.googlemail.com
10aspmx3.googlemail.com
5alt1.aspmx.l.google.com
5alt2.aspmx.l.google.com

TXT 10

MS=A39F8513BE669C8E81B8A81F4623ACA149454E87
abuseipdb-verification=zuewz0Gw
google-site-verification=3Es_BXEZ7HqL0XycxzjS9N4GQcC6k7dG4DPaxvl-WUQ
google-site-verification=9Jv0wj8luedHthbKsLItU6B2HpdPeynsMOD41km1VqY
google-site-verification=PM2i77lQZbZ41LSxXD5v4y7g7CE0LFXdJdYy3ejfuow
v=spf1 include:_spf.google.com include:amazonses.com include:mailgun.org -all
v=DMARC1; p=reject
v=BIMI1;l=https://static.zulip.com/static/images/logo/zulip-icon-bimi.svg
v=spf1 -all
v=spf1 -all

NS 4

ns-1206.awsdns-22.org
ns-1854.awsdns-39.co.uk
ns-427.awsdns-53.com
ns-806.awsdns-36.net

SOA 1

ns-806.awsdns-36.net awsdns-hostmaster.amazon.com

CAA 2

issue "amazontrust.com"
issue "letsencrypt.org"

TLS Certificates (3)

Common Name	Issuer	Expires
`zulip.com`	C=US, O=Amazon, CN=Amazon ECDSA 256 M04	Fri, 05 Mar 2027 23:59:59 +0000
`Amazon ECDSA 256 M04`	C=US, O=Amazon, CN=Amazon Root CA 3	Fri, 23 Aug 2030 22:34:28 +0000
`Amazon Root CA 3`	C=US, ST=Arizona, L=Scottsdale, O=Starfield Technologies, Inc., CN=Starfield Services Root Certificate Authority - G2	Thu, 31 Dec 2037 01:00:00 +0000

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

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

Ed25519 Receipt

Receipt ID: rcpt_b49d97f077faffa6
Output Hash: 9d46e090edc46df452dddb846f0ff5a82cbee66d57d5a114937fab0db9ecd2d8
Signature: ed25519:988211becfd43a3c59b3791611e2eb2569bb6b01c65e8697421f37ac78e9a799b10e94c31c6a1ecf25b5d4efda40a20d3b193d60bdb602b1457c5782527a6000
Public Key: ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent: (genesis)
Plane: fast

Verify this in your browser

Permalink: https://domaindrift.io/t/zulip.com