An automatic number announcement circuit (ANAC) is a special telephone number that is meant to be used by phone company technicians and other telecommunications technicians to determine the phone number of a particular line.

The way an ANAC works is fairly simple: A technician will call a local ANAC's phone number (in Connecticut, they would dial 970). This number connects to a computer at a local central office which uses a voice synthesizer or digital samples to "speak" the phone number of the line calling in. The main purpose of this system is to allow phone company technicians to identify which telephone line they are connected to. Because this system is based on automatic number identification (not caller ID) and meant for phone company technicians, the ANAC system works with unlisted and even numbers with caller ID blocking.

Some ANACs are very regional or local in scope, while others are state or area code-wide. There appears to be no national cohesive system for them. Every telephone company (big or small) can determine its own ANAC for each individual central office, leading to a mish-mash of overlapping and/or spotty coverage.

In most North American area codes, 958-xxxx and 959-xxxx exchanges are reserved for various local and long-distance test purposes (a few may also reserve 999-xxxx); ANAC numbers sometimes appear in the 958-xxxx range but there is no requirement that they reside there. Other local test numbers may include ringback (to test the ringer when installing telephones) and loop lines (which connect a call to another inbound call to the same or another test number). Some carriers (such as Bell Canada) have been known to programme payphones to disable calls to 958 or 959 test lines.

Some large telephone companies have toll-free numbers set-up, but these numbers remain undisclosed to prevent abusive use.

There are some private national toll-free numbers that use ANI and then have a computer read back the number that is calling, but these are not intended for use in identifying your phone number, they are used in order for you to confirm the phone you are calling from so that a computer can automatically pull up your account for the next available customer service representative. However, if one were to call up one of these numbers, listen for the number confirmation and hang up, they would in effect be using this system as if it were an ANAC.

"Our records indicate you are calling from 555_555_5555, if this is correct, press 1, if it is not correct, press 2... CLICK"

ANAC numbers

For easier reference, the list is presented by area code. In some regions, there are several numbers depending on the telephone company and/or the area you are calling from as there can be several central offices serving some areas. All are local numbers.

Information is presented in the following form:

Area code: ANAC approximate geographic region

United States

201: 958 Hackensack/Jersey City/Newark/Paterson, NJ
202: 811 District of Columbia
203: 970 CT
205: 300_222_2222 Birmingham, AL
205: 300_555_5555 Many small towns in AL
205: 300_648_1111 Dora, AL
205: 300_765_4321 Bessemer, AL
205: 300_798_1111 Forestdale, AL
205: 300_833_3333 Birmingham
205: 557_2311 Birmingham, AL
205: 811 Pell City/Cropwell/Lincoln, AL
205: 841_1111 Tarrant, AL
205: 908_222_2222 Birmingham, AL
206: 411 WA (Not US West)
207: 958 ME
209: 830_2121 Stockton, CA
209: 211_9779 Stockton, CA
210: 830 Brownsville/Laredo/San Antonio, TX
210: 951 Brownsville/Laredo/San Antonio, TX (GTE)
212: 958 Manhattan, NY
213: 114 Los Angeles, CA (GTE)
213: 1223 Los Angeles, CA (Some 1AESS switches)
213: 211_2345 Los Angeles, CA (English response)
213: 211_2346 Los Angeles, CA (DTMF response)
213: 61056 Los Angeles, CA
214: 570 Dallas, TX
214: 790 Dallas, TX (GTE)
214: 970_222_2222 Dallas, TX
214: 970_611_1111 Dallas, TX (Southwestern Bell)
215: 511 Philadelphia, PA
215: 958 Philadelphia, PA
216: 331 Akron/Canton/Cleveland/Lorain/Youngstown, OH
216: 959_9892 Akron/Canton/Cleveland/Lorain/Youngstown, OH
219: 550 Gary/Hammond/Michigan City/Southbend, IN
219: 559 Gary/Hammond/Michigan City/Southbend, IN
301: 2002006969 Hagerstown/Rockville, MD
301: 958_9968 Hagerstown/Rockville, MD
303: 958 Aspen/Boulder/Denver/Durango/Grand Junction, CO
305: 200_555_1212 Ft. Lauderdale/Key West/Miami, FL
305: 200200200200200 Ft. Lauderdale/Key West/Miami, FL
305: 780_2411 Ft. Lauderdale/Key West/Miami, FL
310: 114 Long Beach, CA (On many GTE switches)
310: 1223 Long Beach, CA (Some 1AESS switches)
310: 211_2345 Long Beach, CA (English response)
310: 211_2346 Long Beach, CA (DTMF response)
312: 200 Chicago, IL
312: 290 Chicago, IL
312: 1_200_8825 Chicago, IL (Last four change rapidly)
312: 1_200_555_1212 Chicago, IL
313: 200_200_2002 Ann Arbor/Dearborn/Detroit, MI
313: 200_222_2222 Ann Arbor/Dearborn/Detroit, MI
313: 200200200200200 Ann Arbor/Dearborn/Detroit, MI
315: 953 Syracuse/Utica, NY
315: 958 Syracuse/Utica, NY
315: 998 Syracuse/Utica, NY
317: 310_222_2222 Indianapolis/Kokomo, IN
317: 559_222_2222 Indianapolis/Kokomo, IN
317: 743_1218 Indianapolis/Kokomo, IN
334: 5572411 Montgomery, AL
334: 5572311 Montgomery, AL
401: 200_200_4444 RI
401: 222_2222 RI
402: 311 Lincoln, NE
404: 311 Atlanta, GA
404: 990 Atlanta, GA
405: 890_7777777 Enid/Oklahoma City, OK
405: 897 Enid/Oklahoma City, OK
407: 200_222_2222 Orlando/West Palm Beach, FL (Bell South)
407: 520_3111 Orlando/West Palm Beach, FL (United)
408: 760 San Jose, CA
408: 940 San Jose, CA
409: 951 Beaumont/Galveston, TX
410: 200_6969 Annapolis/Baltimore, MD
410: 200_200_6969 Annapolis/Baltimore, MD
410: 200_555_1212 Annapolis/Baltimore, MD
410: 811 Annapolis/Baltimore, MD
412: 711_6633 Pittsburgh, PA
412: 711_4411 Pittsburgh, PA
413: 958 Pittsfield/Springfield, MA
413: 200_555_5555 Pittsfield/Springfield, MA
414: 330_2234 Fond du Lac/Green Bay/Milwaukee/Racine, WI
415: 200_555_1212 San Francisco, CA
415: 211_2111 San Francisco, CA
415: 2222 San Francisco, CA
415: 640 San Francisco, CA
415: 760_2878 San Francisco, CA
415: 7600_2222 San Francisco, CA
419: 311 Toledo, OH
423: 200_200_200 Chattanooga, Johnson City, Knoxville, TN
501: 511 AR
502: 2002222222 Frankfort/Louisville/Paducah/Shelbyville, KY
502: 997_555_1212 Frankfort/Louisville/Paducah/Shelbyville, KY
503: 611 Portland, OR
503: 999 Portland, OR (GTE)
504: 99882233 Baton Rouge/New Orleans, LA
504: 201_269_1111 Baton Rouge/New Orleans, LA
504: 998 Baton Rouge/New Orleans, LA
504: 99851_0000000000 Baton Rouge/New Orleans, LA
508: 958 Fall River/New Bedford/Worchester, MA
508: 200_222_1234 Fall River/New Bedford/Worchester, MA
508: 200_222_2222 Fall River/New Bedford/Worchester, MA
508: 26011 Fall River/New Bedford/Worchester, MA
509: 560 Spokane/Walla Walla/Yakima, WA
510: 760_1111 Oakland, CA
512: 830 Austin/Corpus Christi, TX
513: 380_55555555 Cincinnati/Dayton, OH
515: 5463 Des Moines, IA
515: 811 Des Moines, IA
516: 958 Hempstead/Long Island, NY
516: 968 Hempstead/Long Island, NY
517: 200_222_2222 Bay City/Jackson/Lansing, MI
517: 200200200200200 Bay City/Jackson/Lansing, MI
518: 511 Albany/Schenectady/Troy, NY
518: 997 Albany/Schenectady/Troy, NY
518: 998 Albany/Schenectady/Troy, NY
540: 211 Roanoke, VA (GTE)
540: 311 Roanoke, VA (GTE)
541: 200 Bend, OR
603: 200_222_2222 NH
606: 997_555_1212 Ashland/Winchester, KY
606: 711 Ashland/Winchester, KY
607: 993 Binghamton/Elmira, NY
609: 958 Atlantic City/Camden/Trenton/Vineland, NJ
610: 958 Allentown/Reading, PA
610: 958_4100 Allentown/Reading, PA
612: 511 Minneapolis/St.Paul, MN
614: 200 Columbus/Steubenville, OH
614: 571 Columbus/Steubenville, OH
615: 200200200200200 Chatanooga/Knoxville/Nashville, TN
615: 2002222222 Chatanooga/Knoxville/Nashville, TN
615: 830 Nashville, TN
616: 200_222_2222 Battle Creek/Grand Rapids/Kalamazoo, MI
617: 200_222_1234 Boston, MA
617: 200_222_2222 Boston, MA
617: 200_444_4444 Boston, MA (Woburn, MA)
617: 220_2622 Boston, MA
617: 958 Boston, MA
618: 930 Alton/Cairo/Mt.Vernon, IL
619: 211_2001 San Diego, CA
619: 211_2121 San Diego, CA
659: 220_2622 Newmarket, NH
703: 211 VA
703: 511_3636 Culpeper/Orange/Fredericksburg, VA
703: 811 Alexandria/Arlington/Roanoke, VA
704: 311 Asheville/Charlotte, NC
707: 211_2222 Eureka, CA
708: 1_200_555_1212 Chicago/Elgin, IL
708: 1_200_8825 Chicago/Elgin, IL (Last four change rapidly)
708: 200_6153 Chicago/Elgin, IL
708: 724_9951 Chicago/Elgin, IL
713: 380 Houston, TX
713: 811 Humble, TX
713: 380_5555_5555 Houston, TX
714: 114 Anaheim, CA (GTE)
714: 211_2121 Anaheim, CA (PacBell)
714: 211_2222 Anaheim, CA (Pacbell)
714: 211_7777 Anaheim, CA (Pacbell)
716: 511 Buffalo/Niagara Falls/Rochester, NY (Rochester Tel)
716: 990 Buffalo/Niagara Falls/Rochester, NY (Rochester Tel)
717: 711 Coaldale/Lansford/Summit Hill, PA (Alltel)
717: 958 Harrisburg/Scranton/Wilkes_Barre, PA
718: 958 Bronx/Brooklyn/Queens/Staten Island, NY
781: 200_2222222 Boston
770: 780_2311 Atlanta/Marietta/Norcross, GA
802: 2_222_222_2222 Vermont
802: 200_222_2222 Vermont
802: 1_700_222_2222 Vermont
802: 111_2222 Vermont
804: 990 Virginia Beach, VA
805: 114 Bakersfield/Santa Barbara, CA
805: 211_2345 Bakersfield/Santa Barbara, CA
805: 211_2346 Bakersfield/Santa Barbara, CA (Returns DTMF)
805: 830 Bakersfield/Santa Barbara, CA
810: 200200200200200 Flint/Pontiac/Southfield/Troy, MI
810: 311 Pontiac/Southfield/Troy, MI
812: 410_555_1212 Evansville, IN
813: 311 Ft. Meyers/St. Petersburg/Tampa, FL
815: 200_3374 Crystal Lake, IL
815: 270_3374 Crystal Lake, IL
815: 770_3374 Crystal Lake, IL
815: 290 La Salle/Rockford, IL
817: 211 Ft. Worth/Waco, TX
817: 970_611_1111 Ft. Worth/Waco, TX (Southwestern Bell)
818: 1223 Pasadena, CA (Some 1AESS switches)
818: 211_2345 Pasadena, CA (English response)
818: 211_2346 Pasadena, CA (DTMF response)
845: 990 Hudson Valley region, NY
860: 970 CT
903: 970_611_1111 Tyler, TX
904: 200_222_222 Jackonsville/Pensacola/Tallahasee, FL
906: 1_200_222_2222 Marquette/Sault Ste. Marie, MI
907: 811 AK
908: 958 New Brunswick, NJ
909: 111 Riverside/San Bernardino, CA (GTE)
910: 200 Fayetteville/Greensboro/Raleigh/Winston_Salem, NC
910: 311 Fayetteville/Greensboro/Raleigh/Winston_Salem, NC
910: 988 Fayetteville/Greensboro/Raleigh/Winston_Salem, NC
914: 990_1111 Peekskill/Poughkeepsie/White Plains/Yonkers, NY
916: 211_0007 Sacramento, CA (Pac Bell)
916: 461 Sacramento, CA (Roseville Telephone)
919: 200 Durham, NC
919: 711 Durham, NC
919: 958_1114 Durham, NC
928: 666_1111 Northern Arizona
954: 200_555_1212 Ft. Lauderdale, FL
954: 200200200200200 Ft. Lauderdale, FL
954: 780_2411 Ft. Lauderdale, FL

Canada

204: 644_4444 Manitoba
306: 115 Saskatchewan
403: 311 Alberta, Yukon and N.W. Territory
403: 908_222_2222 Alberta, Yukon and N.W. Territory
403: 999 Alberta, Yukon and N.W. Territory
450: 320_1180 Most of the province of Quebec
506: 1_555_1313 New Brunswick
514: 320_1232 Montreal, Quebec
514: 320_1223 Montreal, Quebec
514: 320_1233 Montreal, Quebec
514: 320_1180 Most of the province of Quebec
604: 1116 British Columbia
604: 1211 British Columbia
604: 211 British Columbia
613: 958_???? (unknown) (These used to be 320_2232 in Ottawa and 320-5123 or 320-9123 in Kingston, but those are no longer valid as +1-613-320 is being recovered for re-use as an ordinary exchange)
705: 320-4567 North Bay/Saulte Ste. Marie, Ontario
709: 311 Newfoundland
819: 320-1112 Quebec
819: 320-1180 Most of the province of Quebec

United Kingdom

 175 This is a Ringback number, not ANAC. (2004-09-08) 

Israel

 110 

Australia

12722123