- 24 Feb 08, 19:54 GMT
A few friends have alerted me to a possible outage at YouTube. I certainly can't get on to the service.
According to some, YouTube has been down for more than an hour....
I'll be keeping an eye on it from my Twitter account. Follow me here.
Lots of people on Twitter are linking Pakistan's decision to block YouTube with the current - seemingly global - outage. I'd be surprised if there was a link as the net doesn't work that way...
UPDATE: I've contacted a Google PR in London who says the service is working for him but is checking on the issue. There are mixed reports - some are saying it is back, others not.
UPDATE TWO: David Ulevitch of OpenDNS believes that "Pakistan Telecom has decided to (accidentally probably) hijack their IP address space".
UPDATE THREE: I'm just writing a news story on this. Looks like Pakistan's attempts to hijack the YouTube IP addresses internally led to ISPs blocking the site globally.
UPDATE FOUR: There will definitely be some fall out from this. It would seem that all it takes to hijack a website globally is for a telecoms firm to instruct its ISPs that they now run a domain, and for one of those ISPs to announce that globally. So that other ISPs follow suit in a piggyback chain of confusion.
As one net engineer told me:
It is exactly like the "game of telephone" that kids play. For example, Pakistan Telecom says "I am responsible for 22.214.171.124 (some IP address)" and then they tell PCCW. PCCW tells Verizon Business and NTT and others. NTT tells us and so when my customers ask "Where is Youtube, we're just answering based on what we've heard..." But all we know is that we heard it from NTT who heard it from PCCW who heard it from Pakistan Telecom. If Pakistan Telecom was lying (or made a mistake), we'd have no way to verify it.
The BBC is not responsible for the content of external internet sites