Published on September 4th, 2015 | by bitcoin0
ISPS May Be Blocking Bit Coin
It seems that some Bitcoin users have been reporting issues when attempting to connect or receive connections to their bitcoin clients across port 8333.
Assuming that Bitcoin clients connect to other bitcoin nodes on TCP port 8333 by default, some of these users have strong suspicions that some ISP providers might have been intentionally blocking communications through and by this specific port.
However, the reports points out that while some ISPs may indeed be blocking port 8333, they are not singling that particular port out but several others that might be affecting the so-called optimum level of performance.
The report concludes that ISPs are probably not blocking intentionally bitcoin, however it’s safer to assume the ISPs are simply protecting their own network by limiting open ports to the ones the vast majority of consumer level people are using.
If you have the same problem and you are uncertain whether your ISP is blocking Bitcoin, you may choose to conduct an inbound port test.