From AzureusWiki
The following is a list of Internet service providers (ISPs) that are known to cause trouble for BitTorrent clients or other P2P clients and the reason why. If you are using one of the following ISPs, please consider finding a new, better one. If your ISP is not on the list and you have reason to believe they are shaping traffic, come to the IRC channel and tell the OPs so that they can add it to the list. However, before you do that, please ensure that you have read about good settings and NAT problems.
One of the biggest problems are providers that that perform traffic shaping on P2P protocols, see Avoid traffic shaping for advice on how to counter that. You'll need that if your ISP is listed with an encryption level greater than 0 or a question mark.
ISPs by country
Argentina
Australia
Belgium
| ISP
| limits BitTorrent bandwidth
| Tier 1 partners might 1 shape
| proposed Encryption level
| limits bandwidth for accounts with a high traffic volume
| limits bandwidth during certain times of the day
| prevents seeding 2
| prevents/filters .torrent download 3
| causes unsolvable NAT problem
| offers no real flatrate
|
| Telenet, Belgium
| No
| Yes
| ?
| No
| Yes
| No
| No
| No
| No
|
Barbados
| ISP
| limits BitTorrent bandwidth
| Tier 1 partners might 1 shape
| proposed Encryption level
| limits bandwidth for accounts with a high traffic volume
| limits bandwidth during certain times of the day
| prevents seeding 2
| prevents/filters .torrent download 3
| causes unsolvable NAT problem
| offers no real flatrate
|
| Cable and Wireless
| Yes
| No
| ?
| No
| No
| No
| No
| No
| No
|
Brazil
Canada
Chile
| ISP
| limits BitTorrent bandwidth
| Tier 1 partners might 1 shape
| proposed Encryption level
| limits bandwidth for accounts with a high traffic volume
| limits bandwidth during certain times of the day
| prevents seeding 2
| prevents/filters .torrent download 3
| causes unsolvable NAT problem
| offers no real flatrate
|
| Terra Net, Chile
| No
| No
| 0
| Yes
| Yes
| No
| No
| No
| No
|
| VTR, Chile
| Yes
| No
| 2+
| No
| No
| No
| No
| No
| No
|
China
Czech Republic
| ISP
| limits BitTorrent bandwidth
| Tier 1 partners might 1 shape
| proposed Encryption level
| limits bandwidth for accounts with a high traffic volume
| limits bandwidth during certain times of the day
| prevents seeding 2
| prevents/filters .torrent download 3
| causes unsolvable NAT problem
| offers no real flatrate
|
| UPC, czech republic
| Yes
| No
| ?
| No
| No
| No
| No
| No
| No
|
Denmark
| ISP
| limits BitTorrent bandwidth
| Tier 1 partners might 1 shape
| proposed Encryption level
| limits bandwidth for accounts with a high traffic volume
| limits bandwidth during certain times of the day
| prevents seeding 2
| prevents/filters .torrent download 3
| causes unsolvable NAT problem
| offers no real flatrate
|
| Sydfynsne
| No
| No
| 0
| No
| No
| No
| No
| Yes
| No
|
France
| ISP
| limits BitTorrent bandwidth
| Tier 1 partners might 1 shape
| proposed Encryption level
| limits bandwidth for accounts with a high traffic volume
| limits bandwidth during certain times of the day
| prevents seeding 2
| prevents/filters .torrent download 3
| causes unsolvable NAT problem
| offers no real flatrate
|
| Club-Internet, France
| Yes
| No
| 4+
| No
| No
| Yes
| No
| No
| No
|
Germany
Hungary
| ISP
| limits BitTorrent bandwidth
| Tier 1 partners might 1 shape
| proposed Encryption level
| limits bandwidth for accounts with a high traffic volume
| limits bandwidth during certain times of the day
| prevents seeding 2
| prevents/filters .torrent download 3
| causes unsolvable NAT problem
| offers no real flatrate
|
| Mikro NET, Hungary
| No
| No
| 0
| No
| No
| No
| No
| Yes
| No
|
Israel
| ISP
| limits BitTorrent bandwidth
| Tier 1 partners might 1 shape
| proposed Encryption level
| limits bandwidth for accounts with a high traffic volume
| limits bandwidth during certain times of the day
| prevents seeding 2
| prevents/filters .torrent download 3
| causes unsolvable NAT problem
| offers no real flatrate
|
| 012 NET, Israel
| No
| No
| ?
| Yes
| No
| No
| No
| No
| No
|
Malaysia
Mexico
Netherlands
| ISP
| limits BitTorrent bandwidth
| Tier 1 partners might 1 shape
| proposed Encryption level
| limits bandwidth for accounts with a high traffic volume
| limits bandwidth during certain times of the day
| prevents seeding 2
| prevents/filters .torrent download 3
| causes unsolvable NAT problem
| offers no real flatrate
|
| Chello, Netherlands
| No
| Yes
| ?
| No
| No
| No
| No
| No
| No
|
New Zealand
| ISP
| limits BitTorrent bandwidth
| Tier 1 partners might 1 shape
| proposed Encryption level
| limits bandwidth for accounts with a high traffic volume
| limits bandwidth during certain times of the day
| prevents seeding 2
| prevents/filters .torrent download 3
| causes unsolvable NAT problem
| offers no real flatrate
|
| iburst, New Zealand
| Yes
| No
| ?
| No
| No
| No
| No
| No
| No
|
Pakistan
| ISP
| limits BitTorrent bandwidth
| Tier 1 partners might 1 shape
| proposed Encryption level
| limits bandwidth for accounts with a high traffic volume
| limits bandwidth during certain times of the day
| prevents seeding 2
| prevents/filters .torrent download 3
| causes unsolvable NAT problem
| offers no real flatrate
|
| Nexlinx, Pakistan
| Yes
| No
| ?
| No
| No
| No
| No
| No
| No
|
Panama
Philippines
Portugal
| ISP
| limits BitTorrent bandwidth
| Tier 1 partners might 1 shape
| proposed Encryption level
| limits bandwidth for accounts with a high traffic volume
| limits bandwidth during certain times of the day
| prevents seeding 2
| prevents/filters .torrent download 3
| causes unsolvable NAT problem
| offers no real flatrate
|
| ONI, Portugal
| Yes
| No
| ?
| No
| No
| No
| No
| No
| Yes
|
| TVCabo, Portugal
| Yes
| No
| 2
| No
| No
| No
| No
| No
| Yes
|
Russia
| ISP
| limits BitTorrent bandwidth
| Tier 1 partners might 1 shape
| proposed Encryption level
| limits bandwidth for accounts with a high traffic volume
| limits bandwidth during certain times of the day
| prevents seeding 2
| prevents/filters .torrent download 3
| causes unsolvable NAT problem
| offers no real flatrate
|
| Точка Ру, Russia
| No
| No
| 0
| No
| No
| No
| No
| Yes
| No
|
Serbia
| ISP
| limits BitTorrent bandwidth
| Tier 1 partners might 1 shape
| proposed Encryption level
| limits bandwidth for accounts with a high traffic volume
| limits bandwidth during certain times of the day
| prevents seeding 2
| prevents/filters .torrent download 3
| causes unsolvable NAT problem
| offers no real flatrate
|
| Tippnet, Serbia
| Yes
| No
| ?
| No
| No
| No
| No
| No
| No
|
Singapore
Spain
United Kingdom
| ISP
| limits BitTorrent bandwidth
| Tier 1 partners might 1 shape
| proposed Encryption level
| limits bandwidth for accounts with a high traffic volume
| limits bandwidth during certain times of the day
| prevents seeding 2
| prevents/filters .torrent download 3
| causes unsolvable NAT problem
| offers no real flatrate
|
| biscit, GB
| Yes
| No
| ?
| No
| No
| No
| No
| No
| No
|
| TalkTalk, GB
| Yes
| No
| ?
| No
| No
| No
| No
| No
| No
|
| Eclipse, UK
| Yes
| No
| 4+
| No
| No
| No
| No
| No
| No
|
| Pipex, UK
| Yes
| No
| throttles encrypted traffic
| No
| Yes
| No
| No
| No
| No
|
| Freedom2Surf, UK
| Yes
| No
| ?
| No
| Yes
| No
| No
| No
| No
|
| PlusNet
| Yes
| No
| ?
| Yes
| Yes
| No
| No
| No
| Yes
|
| BT Broadband, UK
| Yes
| No
| throttles non-HTTP traffic
| No
| Yes
| No
| No
| No
| No
|
| Tiscali / Toucan
| Yes
| No
| 2+
| No
| Yes
| No
| No
| No
| No
|
| Virgin Media, GB
| Yes
| No
| 5+
| Yes
| Yes
| No
| No
| No
| No
|
United States of America
Venezuela
| ISP
| limits BitTorrent bandwidth
| Tier 1 partners might 1 shape
| proposed Encryption level
| limits bandwidth for accounts with a high traffic volume
| limits bandwidth during certain times of the day
| prevents seeding 2
| prevents/filters .torrent download 3
| causes unsolvable NAT problem
| offers no real flatrate
|
| Intercable,Venezuela
| Yes
| No
| 2+
| Yes
| No
| No
| No
| No
| No
|
challenged entries
Entries listed here have been challenged by at least one person and require further verification
| ISP
| limits BitTorrent bandwidth
| Tier 1 partners might 1 shape
| proposed Encryption level
| limits bandwidth for accounts with a high traffic volume
| limits bandwidth during certain times of the day
| prevents seeding 2
| prevents/filters .torrent download 3
| causes unsolvable NAT problem
| offers no real flatrate
| comment
|
| ya.com, Spain
| No
| No
| 2+
| No
| Yes
| No
| No
| No
| No
| challenged by a ya.com employee
|
Notes
- Note 1: This information is hard to verify and thus only tentative
- Note 2: Enabling Tools -> Options -> Transfer -> Use lazy bitfield will probably help, try encryption otherwise
- Note 3: Download .torrents in .zip files, via HTTPS or use magnet links instead
- Note 4: Resnets have no common governing body and hence have different policies on filesharing, the listed problems are those that are most frequently reported by Azureus users from different networks.
- Note 5: Appears to be blocking default port range; be sure to select a port in the 50,000s.
See also
Read the Azureus FAQ