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
| Pattern | Domains |
|---|---|
| vocab+tld | 9961 |
| brand | 694 |
| city+vocab | 7 |
Top-level domains of suspicious matches
| TLD | Domains |
|---|---|
| .shop | 6344 |
| .site | 1690 |
| .online | 825 |
| .top | 471 |
| .xyz | 421 |
| .com | 361 |
| .club | 119 |
| .icu | 79 |
| .dev | 52 |
| .au | 42 |
Rental vocabulary in matched names
| Keyword | Domains |
|---|---|
| rental | 6530 |
| villa | 1289 |
| stay | 536 |
| bnb | 489 |
| vacation | 340 |
| holiday | 332 |
| booking | 305 |
| apartment | 117 |
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.}
}
Booking a rental this week? Run the listing through the free checker first. Manage properties? Bikoosh watches your portfolio for clones behind numbers like these.
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