CONTINUOUS INTERNET TELEMETRY24H DRIFT13,070 material changesacross 10,427 domains · last 24hNOW546 curated domains not reachable+44 vs yesterdaySITE ERRORS35,002 sites serving errorslast probe · 5xx / 404 / TLSBOT DEFENSEbot defense observed on 154,671 sites429 rate-limit / 403 bot-block, a posture signal

zsl.org

Observed Jul 29, 2026, 02:28 UTC (13h 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.

Guarded by a firewall
Runs onCloudflare
Email byMicrosoft 365
Secured byGoogle Trust Services
Also usesGoogle Search Console
tranco_100k
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat zsl.org actually stands on - every host below is a signed observation
zsl.org
A / AAAA
172.66.148.166104.20.27.209
Cloudflareserves the site
NS
ns11.dnsmadeeasy.orgns13.dnsmadeeasy.orgns15.dnsmadeeasy.orgns14.dnsmadeeasy.org+2 more
dnsmadeeasy.organswers its DNS
MX
zsl-org.mail.protection.outlook.com
Microsoft 365receives its email
TLS
zsl.org
Google Trust Servicesissued its certificate

DNS Records

A 2

  • 172.66.148.166
  • 104.20.27.209

MX 1

  • 0zsl-org.mail.protection.outlook.com

TXT 15

  • _pwpm2osoon10qaeqr9hw398fnfbr900
  • 938711737-5829823
  • google-site-verification=ahJxzcvbCCjET8KyshDJFg420x0TMgCs-xDyoSgdMsY
  • _j0pqa1lbaiqgi2ritsuaecnbqz83sv0
  • v=spf1 ip4:23.249.219.163 ip4:23.249.219.164 ip4:20.157.119.69 ip4:167.98.22.132 ip4:167.98.22.155 ip4:52.138.196.70 ip4:77.73.1.172 ip4:206.187.52.202 ip4:185.58.87.40/29 ip4:185.58.87.48/31 ip4:185.58.84.40/29 ip4:185.58.84.48/31 ip4:205.201.128.0/20 ip4:198.2.128.0/18 ip4:148.105.8.0/21 ip4:40.69.70.121 ip4:206.187.53.111 ip4:206.187.52.21 include:spf.protection.outlook.com include:eu.rp.oracleemaildelivery.com include:u30280139.wl140.sendgrid.net include:relay.mailchannels.net ~all
  • 8kvkxvkm6r97cl7vksqjrrwkl0ml9fgf
  • _53nr9vpy15nunbh9o3rlhvfuigfzf3l
  • sophos-domain-verification=90aa4af72a394064ecdab4656ee60f887d51227621d5d88aa8341f93de36012c
  • MS=ms41955746
  • kkp5f1rq76q0ffxmzz4dyntvqqbg1b1k

NS 6

  • ns11.dnsmadeeasy.org
  • ns13.dnsmadeeasy.org
  • ns15.dnsmadeeasy.org
  • ns14.dnsmadeeasy.org
  • ns12.dnsmadeeasy.org
  • ns10.dnsmadeeasy.org

SOA 1

  • ns10.dnsmadeeasy.org hostmaster.zsl.org

SRV 1

  • autodiscover.zsl.org:443 p0

TLS Certificates (3)

Common NameIssuerExpires
zsl.org C=US, O=Google Trust Services, CN=WE1 Fri, 23 Oct 2026 15:57:39 +0000
WE1 C=US, O=Google Trust Services LLC, CN=GTS Root R4 Tue, 20 Feb 2029 14:00:00 +0000
GTS Root R4 C=BE, O=GlobalSign nv-sa, 2.5.4.11=Root CA, CN=GlobalSign Root CA Fri, 28 Jan 2028 00:00:42 +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 zsl.org. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID
rcpt_660d96a7ab8d6860
Output Hash
e67bd53266b3b7ae31eb00b8852024bf243750a1cc735436aba46877f77ecc9c
Signature
ed25519:ed59e13ab04085a043c72ea7361a7bac677ae41ee8e8aefa5e5507aeec7e299b73755909c8b8147fb4f0346471bd008faa3c2688a8254d3e80e6f0ea19c88003
Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent
(genesis)
Plane
fast
Verify this in your browser