CONTINUOUS INTERNET TELEMETRY24H DRIFT23,583 material changesacross 21,757 domains · 24h to ~3h agoROTATION57 domains moved DNS from koaladns.com to kirklanddc.com, 55 moved backa rotation loop, not a migration · 24hEMAIL DRIFT1 domain switched email providertop destination ~NOW603 curated domains not reachablelast probe, steadySITE ERRORS33,520 sites serving errorslast probe · 5xx / 404 / TLSBOT DEFENSEbot defense observed on 118,157 sites429 rate-limit / 403 bot-block, a posture signal

lehrer-online.de

Observed Aug 2, 2026, 20:36 UTC (6d ago). Every field below was attested with an Ed25519 signature at scan time.

This reading of lehrer-online.de was taken 6d ago

lehrer-online.de is on the survey sweep, which works its way across the whole catalog rather than returning to one name on a schedule. Putting lehrer-online.de under watch moves it to the fast lane, where DomainDrift re-checks it about every 5 minutes and signs each reading, so a change becomes a dated event within minutes instead of waiting for the sweep to come round.

Watch lehrer-online.de Watching a domain needs a DRM3 account. The reading above stays free and public either way.
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Up right now
Email byMicrosoft 365
Secured byDigiCert
Also usesStripe
IPv6 · tranco
Every line above is a signed observation. Check the math at the bottom of the page.
EVIDENCE OF WILDCARD DNSobserved 2026-08-07 20:40 UTC

DomainDrift asked this domain for a TXT record at a name nobody registers, and got an answer back. A domain that answers a name that was never created is answering names in general, and that is wildcard DNS.

Wildcard DNS clusters around domain parking, dynamic DNS and catch-all hosting. It is also a real attack surface: if every invented hostname resolves, then a hostname an attacker invents resolves too, which is the ground state for subdomain takeover and for phishing hosted under a name that looks legitimate.

This is evidence of wildcard behaviour, not a proven fact. It rests on one control name: a domain could legitimately serve a TXT record at exactly that name for an unrelated reason, and a wildcard that answers address records but not TXT records would not be caught here at all. What this reading is and is not.

INFRASTRUCTURE MAPwhat lehrer-online.de actually stands on - every host below is a signed observation
lehrer-online.de
A / AAAA
138.201.50.2182a01:4f8:172:be7::2
2a01serves the site
NS
ns4.oberdieck.comns2.oberdieck.comns1.oberdieck.comns3.oberdieck.com
oberdieck.comanswers its DNS
MX
lehreronline-de01e.mail.protection.outlook.com
Microsoft 365receives its email
TLS
*.lehrer-online.de
DigiCert Incissued its certificate

DNS Records

A 1

  • 138.201.50.218

AAAA 1

  • 2a01:4f8:172:be7::2

MX 1

  • 10lehreronline-de01e.mail.protection.outlook.com

TXT 3

  • stripe-verification=76dc71ac95a85885c3be9b47eb36163ef4d194f714b66f08658cbf9b74a15296
  • v=spf1 a mx ptr ip4:89.191.78.0/24 ip4:82.165.112.33 include:spf.protection.outlook.com include:spf.crsend.com ip4:185.98.184.0/24 ip4:80.82.206.0/26 ip4:188.40.30.118 include:emsd1.com include:_spf.sendnode.com ~all
  • MS=ms60762245

NS 4

  • ns4.oberdieck.com
  • ns2.oberdieck.com
  • ns1.oberdieck.com
  • ns3.oberdieck.com

SOA 1

  • ns1.oberdieck.com hostmaster.internetwire.de

MCP_RECORDS 3

  • MS=ms60762245
  • stripe-verification=76dc71ac95a85885c3be9b47eb36163ef4d194f714b66f08658cbf9b74a15296
  • v=spf1 a mx ptr ip4:89.191.78.0/24 ip4:82.165.112.33 include:spf.protection.outlook.com include:spf.crsend.com ip4:185.98.184.0/24 ip4:80.82.206.0/26 ip4:188.40.30.118 include:emsd1.com include:_spf.sendnode.com ~all

DMARC_RECORDS 1

  • v=DMARC1;p=none;

BIMI_RECORDS 3

  • MS=ms60762245
  • stripe-verification=76dc71ac95a85885c3be9b47eb36163ef4d194f714b66f08658cbf9b74a15296
  • v=spf1 a mx ptr ip4:89.191.78.0/24 ip4:82.165.112.33 include:spf.protection.outlook.com include:spf.crsend.com ip4:185.98.184.0/24 ip4:80.82.206.0/26 ip4:188.40.30.118 include:emsd1.com include:_spf.sendnode.com ~all

MTA_STS_RECORDS 3

  • MS=ms60762245
  • stripe-verification=76dc71ac95a85885c3be9b47eb36163ef4d194f714b66f08658cbf9b74a15296
  • v=spf1 a mx ptr ip4:89.191.78.0/24 ip4:82.165.112.33 include:spf.protection.outlook.com include:spf.crsend.com ip4:185.98.184.0/24 ip4:80.82.206.0/26 ip4:188.40.30.118 include:emsd1.com include:_spf.sendnode.com ~all

TLS Certificates (3)

Common NameIssuerExpires
*.lehrer-online.de C=US, O=DigiCert Inc, 2.5.4.11=www.digicert.com, CN=Thawte TLS RSA CA G1 Wed, 28 Oct 2026 23:59:59 +0000
Thawte TLS RSA CA G1 C=US, O=DigiCert Inc, 2.5.4.11=www.digicert.com, CN=DigiCert Global Root G2 Tue, 02 Nov 2027 12:24:25 +0000
*.lehrer-online.de C=US, O=DigiCert Inc, 2.5.4.11=www.digicert.com, CN=Thawte TLS RSA CA G1 Wed, 28 Oct 2026 23:59:59 +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; the only network request the check makes is for the published public keys.

Verify this receipt

Ed25519 Receipt

Receipt ID
rcpt_5342186640d406e4
Output Hash
d3f9f72259d1ed2f767829984e4f1517bf7a26b870add0764b9cc2c42ab3c49f
Signature
ed25519:8baec051807f56697a6b600f60a4f486d9fc6907ae29f5b2b879be25d12e4b8e5592429dbc3c294a8aee2698ad48f76e1733ae34c44564c616fb8a1ab0bb140e
Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent
(genesis)
Plane
fast
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