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Numbers by age tier

Different age tiers need different chase strategies. Pick a tier to see this carrier's blocks in that window plus advice on what to do next.

HOT Recently issued
≤ 18 months · 0 blocks · highest chance the carrier can still help
WARM A while back
0 blocks · long shot but worth calling
COLD Several years ago
0 blocks · contact the number directly

HQ: Sioux Center, IA

Street view of Northern Iowa Telephone Company HQ
Street view
Satellite view of Northern Iowa Telephone Company HQ
Satellite

Block portfolio at a glance

By age

Undated: 77blocks
  • Recent (0). Last 18 mo
  • Medium (0)
  • Old (0)
  • Undated (7)

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 VirginiaKentuckyOhioMichiganWyomingMontanaIdahoWashingtonTexasCaliforniaArizonaNevadaUtahColoradoNew MexicoOregonNorth DakotaSouth DakotaNebraskaIowa (IA): 6 blocksMississippiIndianaIllinoisMinnesota (MN): 1 blocksWisconsinMissouriArkansasOklahomaKansasLouisianaVirginiaDistrict of Columbia

Top area codes

Bars show total blocks; red overlay is recent.

71265071

Area codes

NPABlocksRecentLast
712 6 · ·
507 1 · ·

States

StateBlocksRecent
IA 6 ·
MN 1 ·

Sister OCNs under Mutual Telephone Company

OCNCompanyTotalRecent
1109 Heartland Telecommunications Company of Iowa dba Premier Communications 110 0
1809 Mutual Telephone Company 10 0
1327 Webb-Dickens Telephone Corporation 2 0
1252 Mutual Telephone Company 1 0