No-one. If you include country and area codes, then perhaps some numbers worldwide would be that long. The longest conventional 'national significant numbers' I can think of in general use are on the China network, where there is a 3-digit area code and 8-digit number, totalling eleven digits.
What is an 11 digit number called?
Name Number of Zeros Groups of (3) Zeros
------------ --------------- -------------------
Decillion 33 11
Undecillion 36 12
Duodecillion 39 13
Tredecillion 42 14
How many digits can a phone number have?
A telephone number can have a maximum of 15 digits. The first part of the telephone number is the country code (one to three digits) The second part is the national destination code (NDC) The last part is the subscriber number (SN)Jul 23, 2014
Why did I get a call from an 11 digit number?
You are getting a call from another country code and it is likely some type of scam so don't answer it if you aren't expecting the call. The call is likely coming from a fake number and they are hoping to get you to answer so you can pay for a premium rate or service.
What is the number 1000000000000000000000000?
Name The Number Symbol
----------- --------------------------------- ------
septillion 1,000,000,000,000,000,000,000,000 Y
sextillion 1,000,000,000,000,000,000,000 Z
quintillion 1,000,000,000,000,000,000 E
quadrillion 1,000,000,000,000,000 P
WHEN DID phone numbers become 10 digits?
1+10 dialing Eleven digits for toll calls became standard in all of North America by the end of 1994 to allow introduction of "interchangeable NPA codes"—area codes that did not have a 0 or 1 as the middle digit and could therefore be confused with the central office code—after January 1, 1995.