Proxy tier benchmark › Targets
Can you scrape Clark County NV parcel data without a proxy?
County property records · minimum viable tier: no proxy needed · measured 2026-08-18
The measurement says yes and the measurement is measuring the wrong thing. The Clark County Assessor parcel-detail application returned the expected content on 10 of 10 unproxied requests (100%) and on every configuration except residential (90%) — but at 7,915 bytes per response, what succeeded was the application shell, not a parcel record. Measured 2026-08-18.
What was measured
| URL | https://maps.clarkcountynv.gov/assessor/AssessorParcelDetail/ |
| Content assertion | Clark County Assessor |
| Arms | 6 |
| Rounds per arm | 10 |
| Requests | 60 |
| Measured | 2026-08-18, 15:38–18:09 UTC |
| Benchmark host | DigitalOcean droplet, New York (nyc3) |
A request counts as a success only if the expected content is present. An HTTP 200 carrying a challenge page, an empty body or the wrong page is a failure, because it is not a page you can use.
This measures whether a tier works, not long-run stability under sustained load. Ten requests per arm, at a two-second floor, never approach a per-IP rate limit — which is the thing a rotating pool exists to defeat.
Results by arm
| Arm | Success | p50 | p95 | Bytes per success | Outcomes |
|---|---|---|---|---|---|
| direct (no proxy) | 100% | 321 ms | 434 ms | 7,915 | success 10 |
| datacenter, one pinned exit | 100% | 544 ms | 1,840 ms | 7,915 | success 10 |
| datacenter, rotating exit | 100% | 992 ms | 1,927 ms | 7,915 | success 10 |
| anti-detect, one pinned exit | 100% | 1,055 ms | 1,924 ms | 7,990 | success 10 |
| anti-detect, rotating exit | 100% | 466 ms | 2,010 ms | 7,990 | success 10 |
| residential, rotating exit | 90% | 1,727 ms | 5,324 ms | 7,990 | success 9, server error 1 |
What protects this target
Nothing, and nothing was retrieved either.
The reconnaissance probe extracted 484 characters of text from this
response. Its opening reads: "Clark County Assessor Parcel Detail Various
parcel attribute values Parcel History Ownership history Parcel Sa..." — a
list of section headings with no values under them. The content assertion for
this target is Clark County Assessor, which appears in the shell's title
element, so every request matched it and every request scored a success without
a single parcel attribute being returned.
PROTECTION-CENSUS.md sets out the rule this target sits on the wrong side of:
"A JS shell is not a block. It is a target a plain-fetch harness cannot measure
at all, and it must be excluded rather than scored." Two county portals were
excluded on that rule — Miami-Dade at 19 characters of text and Maricopa's
/mcs/ application at 259. Clark County, at 484, was kept. The difference
between 259 and 484 characters is not a difference in kind.
The right tool for this target is a rendered browser — see the Browser API — and the right proxy tier for it is a question this run did not answer.
robots.txt status
The host serves no robots.txt — the request returns HTTP 404. Nothing is disallowed, and nothing is granted either.
| Status | allowed |
| File | https://maps.clarkcountynv.gov/robots.txt |
| Crawl-delay | not declared |
| Fetched as | the benchmark's own User-Agent |
| Note | no robots.txt (HTTP 404) |
Limits of this result
- The success rates on this page describe the retrieval of a JavaScript application shell. No parcel data was requested or returned, and no conclusion about collecting parcel data follows from them.
- Ten rounds per arm in a single three-hour window on 2026-08-18. Anti-bot behaviour drifts; a result older than a few months is a historical record, not a current one.
- One exit geography. Every request left from a US datacenter host or a US exit, so nothing here describes how this target answers traffic from elsewhere.
- The unproxied arm ran from a clean, previously unused cloud IP with no accumulated reputation. It is a best case a production scraper will not sustain.
Related
- Real estate data
- Does the Broward County property appraiser block proxies?
- Is the Harris County HCAD property search blocked by Cloudflare?
- Do you need a proxy for King County WA property records?
- Proxy tier benchmark: full report
Run date: 2026-08-18 · Full benchmark report · Harness and raw data · All 32 targets
The 60 rows behind this page are in results/six-arm/raw.csv; filter them with grep '^[^,]*,us_nv_clark_prop,' raw.csv.
Test your own target
The result above describes one URL on one day. Paste your own URL into the live tester and see the real response before creating an account.