● Reachability per country × provider
European providers block gambling domains one at a time. Orange Polska starts filtering while Netia still resolves — your uptime monitor stays green and your tracker calls it a soft week. ASNWatch names the provider, within minutes.
$ curl asn.watch/api/public/v1/pairs
| provider | PL | DE | IT | ES |
|---|
Baseline established across 20 pairs.
Pulls campaigns and budgets from
Mechanism
A residential check through a real consumer ISP is what proves a block — and it is the expensive part. So it never runs on healthy pairs.
Each domain × country × provider pair is checked every one to two hours through the cheap pool. The classifier separates a live landing page from a regulator stub, a captcha, a redirect and a genuine outage — not just 200 or not-200.
The suspect pair moves to every 5–10 minutes and re-tests through a residential exit inside that exact ASN. Nothing else in your account changes speed.
Two consecutive residential confirmations open the incident and send one alert — domain, country, provider, event type, plus the campaign and daily budget bound to it. Three clean checks close it.
A domain that fails from every provider at once is an origin outage, not a block. It is grouped into one domain-level incident instead of forty per-ASN alerts.
Category
| Question you actually have | Uptime monitor | Free ping tool | Affiliate tracker | ASNWatch |
|---|---|---|---|---|
| Which ISP is blocking? | No | No | No | Named provider and ASN |
| Block or captcha? | Both read “down” | Both read “down” | No | Five distinct verdicts |
| How much budget is exposed? | No | No | After the fact | Campaign and daily budget in the alert |
| How long will this domain last? | No | No | No | Expected lifetime per country |
| When do I find out? | Minutes, if fully down | When you remember | Days, via conversions | ≈15 minutes, confirmed |
Analytics
Every check is kept. Over weeks that becomes the one number no uptime monitor can give you: how long a domain typically survives in each market.
Median, not mean — a couple of domains that survived six months would drag an average far from the typical case. Domains still alive stay in the sample rather than being dropped, because counting only the ones already banned biases the estimate downward. Below ten confirmed blocks every figure is labelled provisional.
Coverage
ASNWatch harvests public node lists, resolves every node's real exit ASN against its own IP-to-ASN map, and probes each one against a canary page it controls. A node that alters the canary is quarantined permanently — that node is exactly the one that would report a block that never happened.
Straight talk about the free tier: public nodes skew heavily toward datacenter networks. Where the pool has no node inside the provider you care about, the matrix says no coverage rather than showing a green cell that means nothing. Paid plans reach any consumer ASN on demand.
Pricing
The free plan detects. Paid plans confirm — every anomaly is re-tested through a residential exit inside the provider itself, so the alert names it.
Tells you something changed.
Tells you which provider — and stands behind it.
For a portfolio you rotate.
Questions
Because that is how the blocking happens. A registry entry lands, one provider implements it this week, another next month, a third never. A country-level check averages that into a green light while a quarter of your audience already cannot load the page.
An uptime monitor answers “up or down, from where I stand”. ASNWatch answers “reachable, blocked, captcha'd, redirected or down — from inside this provider, in this country”. Those are different questions, and only one of them tells you which geo to pause.
They would, unmanaged. Every node is verified against a canary page we control before it joins the pool, and any node that modifies that page is quarantined for good. Free-plan alerts still carry lower confidence than residential-confirmed ones, and they say so.
Domain, country, provider name and ASN, event type, the rules that matched, the final URL after redirects, and the campaign plus daily budget bound to that domain. Enough to act without opening the dashboard.
Residential confirmation. The free plan runs on a collected public node pool, which skews toward datacenter networks and often has no node inside the consumer provider you care about. Paid plans re-test every anomaly through a residential exit inside that exact ASN before alerting you — so the alert names the provider, and you can act on it.
Twenty-five European markets with 81 consumer providers seeded — Poland, Germany, Italy, Spain, France, Portugal, Greece, Czechia, Romania, Hungary, Bulgaria, Slovakia, Croatia, Austria, the Netherlands, Belgium, the Nordics and the Baltics.
No. Paste a list of domains, pick your geos, and the matrix fills in. That path is designed to take under five minutes from an empty account.
Three domains, free forever. No card, no DevOps.