Area code 213 serves the central part of downtown Los Angeles, California. ZIP Code boundaries do not correspond to area code boundaries. To get a telephone number with a 213 number, you can get landline service at an address in central downtown Los Angeles, or you can request a 213 number from a mobile phone company or VoIP company (magicJack, etc.).
The first telephone area codes were issued for the USA and Canada in 1947. The first telephone area codes were issued in the UK in 1958.
You can get a state-by-state listing of telephone area codes in India at the link below.
The same local telephone number can exist in many different area codes. (After all, that's the whole point of area codes.) If you know where the telephone number is from, and if that place has only one area code, you can find out that way.
No, telephone area codes are discrete data.
Fax machines use the same telephone lines as voice calls. If you unplug your regular landline telephone and plug a fax machine into the same jack, your voice number is suddenly a fax number. When sending a fax, you dial the fax number exactly the same way you would dial it on a regular telephone. Of course, if you live in an overlay area (two or more area codes for the same geographic zone), it is possible that your voice number and fax number will be in different area codes, just as it is possible to have two voice numbers in different area codes. For example, in Dallas you might have a 214 voice number and a 469 fax number.
Kiribati is country code +686. There are no city codes or area codes. The local number is 5 digits.
A Texas telephone call will have a prefix with it's area code in it. Texas has many area codes. Below are some of the area codes.210214254281325361409430432469512682713806817830832903915936940956972979
Area codes are discrete data.
The Kingdom of Tonga is country code +676. There are no city codes or area codes. The local number is 6 digits.
The Seychelles use country code +248. There are no city codes or area codes. The local number is 7 digits.
Before area codes, telephone areas in North America were defined by reference to the nearest large city.
Yes, a number in area code 855 can be used for a fax machine. A fax number is just a telephone number that currently has a fax machine connected to it instead of (or in addition to) a regular telephone. Area code 855 is toll-free within North America (USA, Canada, etc.), along with area codes 800, 888, 877, and 866, and future area codes 844, 833, and 822.