A Czech IP comes from a Czech internet provider: O2, Vodafone, T-Mobile or one of hundreds of smaller ones. A residential proxy routes your traffic through one of their customer lines. Czech sites then show you koruna prices, local search results and the ads that run there.
O2, Vodafone and T-Mobile networks announce 46.0% of Czechia's IPv4 addresses, and 579 small holders share another 14.9%. The registry holds surprises too: the largest record carries the Nordic Telecom name but runs on O2's networks. Seller pools equal 1.7% of the 9.2 million addresses at most. Our residential proxies target Czechia at $0.50/GB for one GB.
Which networks does a Czech IP come from?
RIPE NCC, the internet registry for Europe, keeps a file of every block it hands out, with the holder's country. With records to October 25, 2026, it lists 9,160,384 IPv4 addresses for Czechia, in 1,784 blocks held by 626 holders. We traced the seven largest records to the networks that announce them:
The record names mislead here. The largest, named CZ-NORDICTELECOMREGIONAL, is announced almost entirely by networks registered to O2 Czech Republic: 2,014,208 of its 2,019,328 addresses. T-Mobile's record is marked as a "CGNAT pool for mobile customers". Two records are spread over many networks. On October 26, 2026, 9 networks announced parts of the BEST-LINE-NET record. 33 announced the record named RU-UMNYESETI, among them Biterika Group and Redline OOO.
Our Czechia proxies page lists 101 networks for Residential Premium, among them T-Mobile Czech Republic, Vodafone Czech Republic and Trioptimum. It also lists 136 cities across 15 regions, such as Prague, Brno, Ostrava and Pilsen.
IPv6 grows steadily. APNIC Labs measured 37.7% of Czech users as IPv6-capable in the 30 days to October 23, 2026. A year earlier it was 32.3%, and in October 2020 14.2%.
How big are the Czech pools sellers advertise?
Small, and close together. We read five sellers' Czech Republic pages through our server on October 26, 2026:
The Bright Data number comes from its page title. Its page text shows 24,910 Czech Republic IPs, one quarter of it.
The four headline numbers sit between 99,643 and 155,739. DataImpulse's counters showed 2,072 unique Czech IPs in 24 hours, 9,401 in 30 days and 948 active at once. Oxylabs puts its 130,363 on a page offering residential or datacenter proxies. We do not publish our own pool size per country.
What changes with a Czech IP?
Czech sites treat you as a local. In Google's words, "IP addresses are roughly based on geography", and location "helps to show you nearby results". Residential Lite chooses the country at the lowest rate. Residential Premium chooses a city or a network, picked by its AS number.
Sites keep their own checks for proxy visitors. One of them is MaxMind's Anonymous IP database, which carries a flag for suspected residential proxies. Our guide to how websites detect proxies describes the rest.
Why do free Czech proxies fail?
Few work, and they carry flags. Our tracker has seen 780 Czech addresses on public free proxy lists since May 13, 2026, and 136 worked at some point. On October 26, 4 were working, none in a datacenter: 2 on O2's network and one each on Eurosignal and Lanservis.
An IP reputation check had flagged all 4 and reported all 4 for recent abuse. Our free proxy list for Czechia shows any that work now.
How do you pay from Czechia?
Pay by card or in crypto. Visa and Mastercard top-ups start at $10 and crypto top-ups at $3, and the credit never expires. PayPal is not offered. Every method is listed on the payment options page, and our guide to buying proxies with crypto shows what each network charges.
How much traffic does a Czech job use?
Reckon on about 380 full desktop pages per GB. HTTP Archive's 2024 Page Weight chapter puts the median desktop page at 2,652 KB and the median mobile page at 2,311 KB. Requests for text alone are far lighter, so weigh twenty pages of your target first.
Which plan fits a Czech job?
Residential Lite with Czechia as the country does most jobs, at $0.50/GB for one GB and $0.44 per GB at volume. With 4 flagged free proxies, the free route is closed. Residential Premium adds the 136 cities, the 101 networks and sticky sessions of up to 24 hours. It costs $1.49/GB for one GB and $1.00 per GB at volume, and our residential proxies page lists every tier.
What this page could not check
- We tested neither speed nor success or block rates, on any network including ours.
- The Czech networks our exits use, and their number, stay unpublished.
- RIPE NCC's file counts addresses handed out. How many are in use, and by how many people, it cannot say.
- Routing covers the seven largest records, read on one day.
- The sellers' pool numbers are as their pages stood on October 26, 2026, and we could not check what each one counts.
- We will check every number here again by January 26, 2027.
Sources
- RIPE NCC, delegated-ripencc-extended-latest, records to October 25, 2026, read October 26, 2026.
- RIPE NCC, RDAP records for the largest Czech address blocks, read October 26, 2026.
- RIPEstat, prefix overview for every block of the seven largest Czech records, read October 26, 2026.
- APNIC Labs, IPv6 use per economy, Czechia, data to October 23, 2026.
- Google Search Help, "Understand and manage your location when you search on Google", read October 25, 2026.
- HTTP Archive, Web Almanac 2024, Page Weight chapter, December 30, 2024.
- MaxMind, GeoIP Anonymous IP database documentation, read October 25, 2026.
- Shifter, Oxylabs, SOAX, Bright Data and DataImpulse, Czech Republic location pages, as shown on October 26, 2026.
- HProxy, residential pricing and payment options pages, read October 25, 2026, and Czechia page, read October 26, 2026.
- HProxy, free proxy check for Czechia, October 26, 2026.
