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Carrier group · Regional Bell Operating Company

AT&T Ohio

Holding: AT&T Inc

Total blocks
4,377
Recent (18 mo)
0
Medium
0
Old
277
Member OCNs
1
States
1
Area codes
11
First assigned block
2001-01-05
Last assigned block
2018-04-12
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Block portfolio at a glance

By age

Old: 277Undated: 4,1004,377blocks
  • Recent (0) — last 18 mo
  • Medium (0)
  • Old (277)
  • Undated (4,100)

Footprint by state

Stronger blue = more blocks issued in that state. ● marks states with activity in the last 18 months.

HawaiiAlaskaFloridaSouth CarolinaGeorgiaAlabamaNorth CarolinaTennesseeRhode IslandConnecticutMassachusettsMaineNew HampshireVermontNew YorkNew JerseyPennsylvaniaDelawareMarylandWest VirginiaKentuckyOhio (OH): 4,377 blocksMichiganWyomingMontanaIdahoWashingtonTexasCaliforniaArizonaNevadaUtahColoradoNew MexicoOregonNorth DakotaSouth DakotaNebraskaIowaMississippiIndianaIllinoisMinnesotaWisconsinMissouriArkansasOklahomaKansasLouisianaVirginiaDistrict of Columbia

Top area codes

Bars show total blocks; red overlay is recent.

61489733075021673193761774044341943844040251352380202341656711

Block assignments by year

01
02
03
33 04
05
06
07
08
31 09
30 10
11
12
13
14
27 16
18

Member OCNs

1 OCN roll up under AT&T Ohio.

OCNCompany name on fileHQTypeTotalRecent
9321 Ameritech Ohio Hoffman Estates, IL Regional Bell Operating Company 4,377 —