National Phone Number Registry NPNR

Area Code 773 Location

Area code 773 is currently assigned for use in Illinois since Oct 12, 1996. This area code originated from the 312 area code previously by means of area code split or overlay. View all phone prefixes used in area code 773 or other area codes in Illinois.

(773)
Enter 7-digit phone number for area code 773 or the complete 10-digit phone number

Phone Prefixes for Area Code 773

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Area code Location Company / Service Provider
773-201 CHICAGO, IL USA MOBILITY WIRELESS, INC.
773-202 CHICAGO, IL AMERITECH ILLINOIS
773-203 CHICAGO, IL NEW CINGULAR WIRELESS PCS, LLC - IL
773-204 CHICAGO, IL USA MOBILITY WIRELESS, INC.
773-205 CHICAGO, IL AMERITECH ILLINOIS
773-206 CHICAGO, IL NEW CINGULAR WIRELESS PCS, LLC - IL
773-207 CHICAGO, IL USA MOBILITY WIRELESS, INC.
773-208 CHICAGO, IL NEW CINGULAR WIRELESS PCS, LLC - IL
773-209 CHICAGO, IL SPRINT SPECTRUM L.P.
773-210 CHICAGO, IL AMERITECH ILLINOIS
773-212 CHICAGO, IL USA MOBILITY WIRELESS, INC.
773-213 CHICAGO, IL NEW CINGULAR WIRELESS PCS, LLC - IL
773-214 CHICAGO, IL USA MOBILITY WIRELESS, INC.
773-215 CHICAGO, IL USA MOBILITY WIRELESS, INC.
773-216 CHICAGO, IL SPRINT SPECTRUM L.P.
773-217 Chicago, IL NEW CINGULAR WIRELESS PCS, LLC - IL
773-218 CHICAGO, IL NEW CINGULAR WIRELESS PCS, LLC - IL
773-219 CHICAGO, IL T-MOBILE USA, INC.
773-220 CHICAGO, IL SPRINT SPECTRUM L.P.
773-221 Chicago, IL AMERITECH ILLINOIS
773-222 CHICAGO, IL USA MOBILITY WIRELESS, INC.
773-223 CHICAGO, IL USA MOBILITY WIRELESS, INC.
773-224 CHICAGO, IL AMERITECH ILLINOIS
773-225 CHICAGO, IL T-MOBILE USA, INC.
773-226 CHICAGO, IL T-MOBILE USA, INC.
773-227 CHICAGO, IL AMERITECH ILLINOIS
773-228 CHICAGO, IL USA MOBILITY WIRELESS, INC.
773-229 CHICAGO, IL AMERITECH ILLINOIS
773-230 CHICAGO, IL NEW CINGULAR WIRELESS PCS, LLC - IL
773-231 CHICAGO, IL LEVEL 3 COMMUNICATIONS, LLC - IL
773-232 CHICAGO, IL USA MOBILITY WIRELESS, INC.
773-233 CHICAGO, IL AMERITECH ILLINOIS
773-234 CHICAGO, IL BANDWIDTH.COM CLEC, LLC - IL
773-235 CHICAGO, IL AMERITECH ILLINOIS
773-236 CHICAGO, IL T-MOBILE USA, INC.
773-237 CHICAGO, IL AMERITECH ILLINOIS
773-238 CHICAGO, IL AMERITECH ILLINOIS
773-239 CHICAGO, IL AMERITECH ILLINOIS
773-240 CHICAGO, IL T-MOBILE USA, INC.
773-241 CHICAGO, IL AMERITECH ILLINOIS
773-242 CHICAGO, IL AMERITECH ILLINOIS
773-243 CHICAGO, IL XO ILLINOIS, INC.
773-244 CHICAGO, IL AMERITECH ILLINOIS
773-245 CHICAGO, IL BANDWIDTH.COM CLEC, LLC - IL
773-246 CHICAGO, IL INDIANA PAGING NTWK
773-247 CHICAGO, IL AMERITECH ILLINOIS
773-248 CHICAGO, IL AMERITECH ILLINOIS
773-249 Chicago, IL BROADWING COMMUNICATIONS, LLC - IL
773-250 CHICAGO, IL MCIMETRO ACCESS TRANSMISSION SERVICES LLC
773-251 CHICAGO, IL NEW CINGULAR WIRELESS PCS, LLC - IL
773 Area Code Information
Type of code: General Purpose Code
Location: IL - US
Time zone: C
Assigned for use: Yes
Code in service: Yes
Service date: October 12, 1996
In jeopardy: No
Relief in progress: Yes
NPA Relief status: Active
Code assignable: Yes
Geographic or
non-geographic:
G
Reserved for future use: No
Planning letter(s): 392 390 195 IL96/02-014 IL96/06-003
Overlay code: Yes
Overlay complex: 773/872
Dialing plan Standard Permissive
Home local calls: 1+10D NA
Foreign local calls: 1+10D NA
Home toll calls: 1+10D NA
Foreign toll calls: 1+10D -

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