What is the longest phone number?

Answer 1

ITU-T recommends standard E.164, stating that 15 digits is the maximum. Summary: http://en.wikipedia.org/wiki/Telephone_number http://www.itu.int/rec/dologin_pub.asp?lang=e&id=T-REC-E.164-200502-I!!PDF-E&type=items

Answer 2

New world record for longest phone conversation is of non stop 51hrs by SUNIL PRABHAKAR of India when he broke previous record of 40hrs of Tony wright of UK. His new record is monitored by Telecom Giant TATA http://longestphoneconversation.com/

Answer 3

The longest telephone call is still going on, even though the two people who started it are both dead! The phone call was started during the second world war, as a hotline between the British and American governments. Because the line was of such vital use, engineers had to work constantly to make sure it was still working - it breaking for a moment could have spelled disaster!. To ensure this, the engineers started a test call alongside the main-line, which they kept going throughout the entire war. Engineers would repeat series of numbers to each other, and note down the response from the other end as proof the line was working. Later, the line was also used to exchange coded messages in a similar way. Even after the war ended, the never-ending phone call continued, through the cold war and to the present day. Engineers still work in shifts, to make sure the trans-Atlantic undersea link is still active - vital for the operation of the modern internet!

Answer 4

UK telephone numbers mostly have 9 or 10 digits after the +44 country code.

Tens of millions of numbers are all the same length at 10 digits.

There are however two numbers that are very much shorter than the rest:

0800 1111 and 0845 46 47.

Answer 5

the longest phone number is 983-49552-072886-117309-5773

Answer 6

The best guess is probably 14 numeric digits but when written down with the + () - spaces and other characters about 21 works.

Answer 7

A landline local call on a party line, pre-1960s.

Answer 8

983-49552-072886-117309-5773

Answer 9

983-49552-072886-117309-5773

Answer 10

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