Comment by forgetfreeman
1 year ago
Minor quibble, 555 isn't fictional, it's typically reserved for teleco internal use, or at least that was the case 25 years ago, who knows what the deal is now. Used to be you could wardial 555-xxxx and end up with all kinds of weird AT&T field installations, back office numbers, switch remote command and control modem numbers, etc.
The fictional block exists, but it's not the entire 555 prefix. It's 555-01xx.
It was the entire "Klondike-5" block, but got narrowed.