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OCN 162G · Competitive Local Exchange Carrier

Onvoy LLC - SD

d/b/a Neutral Tandem-South Dakota LLC

Part of the Neutral Tandem group — 10 OCNs across 11 states · 27,664 blocks combined.

Total blocks
513
Recent (18 mo)
8
Medium
19
Old
483
Area codes
1
States
1
Address
1 S Wacker Dr, Siute 200
Chicago, IL 60606-4614
Website
Neutral Tandem
First assigned block
2001-02-07
Last assigned block
2025-08-26
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HQ — Chicago, IL

Street view of Onvoy LLC - SD HQ
Street view
Satellite view of Onvoy LLC - SD HQ
Satellite

Block portfolio at a glance

By age

Recent: 8Medium: 19Old: 483Undated: 3513blocks
  • Recent (8) — last 18 mo
  • Medium (19)
  • Old (483)
  • Undated (3)

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 Dakota (SD): 513 blocks — 8 recentNebraskaIowaMississippiIndianaIllinoisMinnesotaWisconsinMissouriArkansasOklahomaKansasLouisianaVirginiaDistrict of Columbia

Top area codes

Bars show total blocks; red overlay is recent.

605513 / 8

Block assignments by year

01
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13
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19
109 20
104 21
22
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25

Best vanity numbers from Onvoy LLC - SD's recent issuances

Numbers in blocks issued in the last 18 months whose digits spell a useful word. Filter by state and category to find one for your business. ★ marks Mike's curated standouts.

NumberSpellsCategoryStateBlock issuedScore
(605) 888-3733 ★ UTTERED Free SD 2025-03-20 21

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Most recent assignments

Last 18 months — these blocks were issued by Onvoy LLC - SD since 2024-11-12.

Number blockStateRate centerAssigned
(605) 705-1XXX SD Sioux Fls 2025-08-26
(605) 888-3XXX SD Chamberlan 2025-03-20
(605) 317-XXXX SD Mitchell 2025-02-17
(605) 317-0XXX SD Mitchell 2025-02-17
(605) 317-1XXX SD Mitchell 2025-02-17
(605) 317-2XXX SD Mitchell 2025-02-17
(605) 317-3XXX SD Mitchell 2025-02-17
(605) 656-9XXX SD Mitchell 2025-02-17

Area codes

NPABlocksRecentLast
605 513 8 2025-08-26

States

StateBlocksRecent
SD 513 8

Sister OCNs in the Neutral Tandem group

Same customer-facing carrier, different state-registered OCN. Combined stats are on the Neutral Tandem group page.

OCNCompany name on fileHQ stateTotalRecent
224C Onvoy LLC IL 8,314 406
464C Onvoy LLC - OH IL 7,228 392
525E Onvoy LLC - TN IL 3,788 166
896E Onvoy LLC - KY IL 2,918 69
719E Onvoy LLC - MS IL 2,104 35
689F Onvoy LLC - ID IL 1,302 12
453F Onvoy LLC - MT IL 905 4
454F Onvoy LLC - ME IL 373 1
637E Onvoy LLC - NH IL 219 7