Arizona Corporation Commission:

Phoenix Office
Arizona Corporation Commission
1200 W. Washington St.
Phoenix, AZ 85007
(602) 542-4251
(800) 222-7000

Utilities Division
Steven M. Olea - Director

Tucson Office
Arizona Corporation Commission
400 W. Congress, Ste. 218
Tucson, AZ 85701
(520) 628-6550
(800) 535-0148

Arizona's new 928 Area Code

Effective June 23, 2001, the 520 area code will be split into two different area codes - 520 and 928. Telecommunications providers in your area are working on the final stages leading up to the June 23 launch. A new area code was necessary because the 520 area code was running out of available telephone number prefixes. This is happening because of increased demand for new telephone numbers used for such services as fax machines, pagers, wireless telephones, second telephone lines, voice mail and other services. To remedy this situation, Arizona will add a new area code, 928, in the 520 region. Please note that if your current area code is 602, 480 or 623, your area code remains the same.

Calls will go through using either area code between June 23, 2001 and January 5, 2002. This is called a "permissive dialing period." Callers who use the old area code after January 5, 2002 will hear a message directing them to hang up and dial again using the new number.

If you own a business and are planning ahead for yellow pages advertising, industry directories and new promotional literature, please remember to include the 928 area code. You should also begin updating your vendor and client lists to reflect the addition of the new area code.

Beginning June 23, 2001, businesses can test their telephone or alarm equipment to determine if it recognizes the new 928 area code by calling the free test numbers: 928-348-7928 or 928-526-4928. If a call to the test number does not go through, contact your equipment provider. They may need to update their in-house programming to connect calls to the 928 area code. You may also need to call your local telephone service provider if your problem cannot be resolved through your equipment provider.

If you are a residential customers, remember to tell friends and relatives about the new area code. Also be sure to update your address book for any businesses and individuals outside your immediate area.

The helpful table below shows the telephone prefix - the second group of three numbers in your telephone number - that stay 520 and the prefixes that are changing to 928. A list of communities affected by the area code change is also included below.

Some of the communities that STAY in the 520 area code: Ajo, Benson, Bisbee, Bowie, Casa Grande, Cascabel, Coolidge, Douglas, Elfrida, Eloy, Florence, Green Valley, Hayden, Maricopa Village, Maricopa, Nogales, Patagonia, Pearce, Portal, Sacaton, San Manuel, San Simon, Sasabe, Sells, Sierra Vista, Stutonic, Sunizona, Superior, Tombstone, Tucson, West San Simon, Whitlow, and Wilcox.

Major communities that CHANGE to the new 928 area code: Bullhead City, Camp Verde, Chinle, Clifton, Cottonwood, Ehrenberg, Flagstaff, Gila Bend, Globe, Grand Canyon, Holbrook, Kingman, Lake Havasu City, Mohave Valley, Oatman, Page, Parker, Payson, Pinetop, Prescott, Quartzsite, Safford, Sedona, Seligman, Show Low, Snowflake, Somerton, Wickenburg, Williams, Window Rock, Winslow, Young and Yuma.

These Prefixes Will Stay In Area Code 520
202	205	206	207	208	209	212	215	216	218	219	224	225	228	229	230
232	235	237	239	240	241	242	243	245	247	248	249	250	251	252	256
258	259	260	263	264	267	270	271	272	275	276	278	280	281	285	287
290	291	292	293	294	295	296	297	298	299	304	307	312	315	316	318
319	320	321	322	323	324	325	326	327	331	349	352	356	357	358	360
361	362	363	364	365	366	370	371	374	375	377	378	381	382	383	384
385	387	388	389	390	391	393	394	397	398	399	400	401	403	404	405
407	408	409	410	417	418	419	421	423	424	426	429	430	431	432	434
439	440	444	446	449	450	452	455	456	457	458	459	461	463	464	465
466	469	470	471	481	483	487	488	489	490	494	495	498	507	508	510
512	513	514	515	516	518	519	529	531	533	534	538	540	544	545	546
547	549	550	553	555	557	558	559	560	561	562	566	568	570	571	572
573	574	575	576	577	578	579	582	584	586	590	591	594	601*	603	604
609	610	615	616	617	618	620	621	622	623	624	625	626	628	629	630
631	642	644	647	648	650	661	663	664	665	670	678	682	689	690	694
695	696	703	705	709	712	720	721	722	723	730	731	733	740	741	742
743	744	745	746	747	748	749	750	751	760	761	762	770	780	784	786
790	791	792	793	794	795	796	797	798	799	801	803	804	805	806	807
816	818	820	822	823	824	825	826	827	836	837	838	839	840	841	842
843	844	845	847	850	860	861	868	869	870	872	873	876	877	878	879
880	881	882	883	884	885	886	887	888	889	891	895	896	901	903	904
906	907	908	909	917	918	924	930	931	932	934	940	954	955	971	975
977	979	980	981	982	987	988	989	990	991	993

B. These Prefixes Will Move To The New 928 Area Code
200	201	203	204	210	213	214	217	220	221	222	223	226	227	231	233
234	236	244	246	253	254	255	257	261	262	265	266	268	269	273	274
277	279	282	283	284	286	288	289	300	301	305	306	308	309	314	317
328	329	330	332	333	334	335	336	337	338	339	340	341	342	343	344
345	346	347	348	350	351	353	354	355	359	367	368	369	372	373	376
379	380	386	392	395	396	402	412	416	422	425	427	428	433	436	437
438	441	442	443	445	447	448	453	454	460	462	467	468	472	473	474
475	476	477	478	479	482	484	485	492	493	496	499	501	503	504	505
517	521	522	523	524	525	526	527	528	530	532	535	536	537	539	541
543	552	554	555	556	563	564	565	567	569	580	581	583	585	587	588
589	592	593	595	596	597	598	599	600	601*	605	606	607	608	612	613
614	627	632	633	634	635	636	637	638	639	640	641	643	645	646	649
651	652	653	654	655	656	657	658	659	660	662	667	668	669	671	672
673	674	677	679	680	681	683	684	685	686	687	688	691	692	693	697
698	699	701	704	706	707	708	710	713	714	715	716	717	718	719	724
725	726	727	728	729	734	735	736	737	738	739	752	753	754	755	756
757	758	759	763	764	765	766	767	768	769	771	772	773	774	775	776
777	778	779	781	782	783	785	787	788	789	810	812	813	817	819	821
828	830	832	833	851	853	854	855	856	857	858	859	864	865	871	875
890	899	910	913	916	919	920	923	925	927	936	941	951	961	962	963
970	978

C. These prefixes are grandfathered and will keep the 520 area code. Local calls to and from these prefixes will require dialing ten digits after the mandatory date.
520	310	Flagstaff	520	451	Sedona
520	491	Flagstaff	520	921	Sedona
520	420	Prescott	520	238	Yuma
520	831	Prescott

Prefix list supplied by NANPA, the North American Numbering Plan Administrator.

NOTE: This list was supplied by the telecommunications industry. If you find a discrepancy, please call the Arizona Corporation Commission or your local telecommunications provider to alert them to the change.

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