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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 · 3 blocks · highest chance the carrier can still help
WARM A while back
0 blocks · long shot but worth calling
COLD Several years ago
2 blocks · contact the number directly

Carrier website

Homepage screenshot of Columbine Telephone Company dba Silver Star Communications silverstar.com: opens in a new tab

HQ: Freedom, WY

Street view of Columbine Telephone Company dba Silver Star Communications HQ
Street view
Satellite view of Columbine Telephone Company dba Silver Star Communications HQ
Satellite

Block portfolio at a glance

By age

Recent: 3Old: 2Undated: 1116blocks
  • Recent (3). Last 18 mo
  • Medium (0)
  • Old (2)
  • Undated (11)

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 VirginiaKentuckyOhioMichiganWyoming (WY): 2 blocksMontanaIdaho (ID): 14 blocks: 3 recentWashingtonTexasCaliforniaArizonaNevadaUtahColoradoNew MexicoOregonNorth DakotaSouth DakotaNebraskaIowaMississippiIndianaIllinoisMinnesotaWisconsinMissouriArkansasOklahomaKansasLouisianaVirginiaDistrict of Columbia

Top area codes

Bars show total blocks; red overlay is recent.

20814 / 33072

Block assignments by year

19
3 25

Most recent assignments

Last 18 months. These blocks were issued by Columbine Telephone Company dba Silver Star Communications since 2024-11-14.

Number blockStateRate centerAssigned
(208) 483-6XXX ID Irwin 2025-09-08
(208) 483-4XXX ID Irwin 2025-03-13
(208) 483-5XXX ID Irwin 2025-03-13

Area codes

NPABlocksRecentLast
208 14 3 2025-09-08
307 2 · ·

States

StateBlocksRecent
ID 14 3
WY 2 ·

Sister OCNs under Horizon Communications Inc

OCNCompanyTotalRecent
340D Gold Star Communications LLC 9 0
2295 Silver Star Telephone Company Inc 7 0
110G Silver Star Telephone Company Inc - WY 6 0
4460 Silver Star Telephone Company Inc - ID 0 0
4461 Silver Star Telephone Company Inc - WY 0 0