4 ms·
Also, at least in the US, you can't have a 1 or 0 in the leading digit, so subtract another 2e9.
by virusduck 8y ago
Also, at least in the US, you can't have a 1 or 0 in the leading digit, so subtract another 2e9.
- consp 8y agoThis is common almost everywhere in the world as the 0 and 1 prefix (the plus in the +XXX landcodes) are usually used for international selection but might require an additional 0 or 1 after the first 0. Though in my country and most of Europe the 1 is not a international prefix.
- rtkwe 8y agoAlso no 555-XXXX numbers.
- Wowfunhappy 8y agoI believe I read somewhere that this is largely a myth—that some specific 555 numbers are kept empty for fictional use, but that some of them are legitimate. Please feel free to fact check me, though.
- invalidusernam3 8y agoAccording to Wikipedia: Only 555-0100 through 555-0199 are now specifically reserved for fictional use; the other numbers have been reserved for actual assignment https://en.wikipedia.org/wiki/555_(telephone_number) https://en.wikipedia.org/wiki/555_(telephone_number)
- nitrogen 8y ago800-555-TELL used to be a voice-operated information service complete with turn by turn navigation, eventually purchased by Microsoft IIRC. XXX-555-1212 used to be an information number (both may still exist; I haven't checked).
- virusduck 8y agoOMG I forgot about TELLME. We used the bejesus out of that at the time.
- reaperducer 8y agoWhile there are rules about the use of 555 numbers, there are a number of local phone companies in the U.S. that don't care, and treat it something like a 10.x.x.x IP address for local use. Things like calling the telco for repairs, or billing inquiries.