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Original data · week of 2026-09-21

10662 suspicious rental domains this week

In the week of 2026-09-21, 10662 newly-certified domains matched vacation-rental fraud naming patterns, out of 76,674,300 certificates observed in public Certificate Transparency logs - one in every 7,191.

Weeks run Monday-Sunday, UTC. This page is the permanent record for the week of 2026-09-21. Aggregates only - patterns, not accusations; no domain is ever named.

Which patterns fired

PatternDomains
vocab+tld9961
brand694
city+vocab7

Top-level domains of suspicious matches

TLDDomains
.shop6344
.site1690
.online825
.top471
.xyz421
.com361
.club119
.icu79
.dev52
.au42

Rental vocabulary in matched names

KeywordDomains
rental6530
villa1289
stay536
bnb489
vacation340
holiday332
booking305
apartment117

Methodology

Bikoosh monitors the public Certificate Transparency stream - the append-only log of all newly-issued HTTPS certificates. Each new domain name is tested against deterministic naming rules associated with rental fraud: rental vocabulary combined with destination city names, brand-lookalike patterns (typosquats, hyphen injection), and rental vocabulary on TLDs with high historical abuse rates. Matching is on names only; a name match is a statistical signal, not a verdict about any specific domain - which is why this report publishes only aggregates.

Cite this week

Bikoosh Vacation Rental Fraud Report, week of 2026-09-21. bikoosh.com/fraud-report/2026-09-21. Licensed CC BY 4.0 - reuse with attribution.

BibTeX
@misc{bikoosh_fraud_2026_09_21,
  title        = {Vacation Rental Fraud Report, week of 2026-09-21},
  author       = {{Bikoosh}},
  year         = {2026},
  howpublished = {\url{https://bikoosh.com/fraud-report/2026-09-21}},
  note         = {Weekly aggregate counts of newly-certified domains matching
                  vacation-rental fraud naming patterns, from public Certificate
                  Transparency logs. Licensed CC BY 4.0.}
}

← week of 2026-09-14 · week of 2026-09-28 →

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