Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!cs.utexas.edu!samsung!gem.mps.ohio-state.edu!wuarchive!texbell!vector!telecom-gateway From: covert@covert.enet.dec.com (John R. Covert 06-Nov-1989 0932) Newsgroups: comp.dcom.telecom Subject: Chicago Cellular Prefixes and the 312/708 Split Message-ID: Date: 6 Nov 89 22:53:08 GMT Sender: news@vector.Dallas.TX.US Lines: 38 Approved: telecom-request@vector.dallas.tx.us X-Submissions-To: telecom@eecs.nwu.edu X-Administrivia-To: telecom-request@vector.dallas.tx.us X-TELECOM-Digest: volume 9, issue 499, message 1 of 6 I just talked to both Chicagoland cellular providers, and got the following information: Ameritech currently has the following Chicago (312) prefixes: 415 909 914* 805 802 718 [Summit, see below.] These, of course, remain 312. The following Ameritech prefixes will remain in area code 312, although they are in suburban rate centers: 550 (LaGrange), 590 (Arlington Heights), 502, 919 (Northbrook) For one year, they will still have suburban rate centers. At the end of that time they will be changed to Chicago rate centers. Ameritech customers who would like to keep suburban rate centers may change their numbers to 708-710 (LaGrange) or 708-370 (Northbrook). Cellular One has a "area-code split hotline" which required me to wait ten minutes. Then the person really didn't want to give me a list of prefixes. She told me that all of their prefixes are Schaumburg prefixes, although it turns out that there are two Chicago prefixes (+) among them. The rest are Rozelle. 659, 504, 815(?), 569(+), 401, 613, 315, 608, 203, 316, 607, 618, 320(+). As was previously mentioned; these remain in 312. The A/C split person said "we're working on moving them to Chicago." 815 doesn't exist, even though Cellular One had it on their list. 708-217 will be the only new Cellular One suburban prefix for now. Ameritech included 914 in the codes which are Chicago codes. However, 914 is currently a Summit rate center. Landline phones in Summit in prefixes 458, 496, 563, 594, 839 are moving to 508. However, 229 and 586 numbers are Chicago rate centers and are not moving. (I think Summit has been a topic of discussion in the past.) /john