NewLocalNumbers.com
Want a number from Onvoy LLC - SD? Tell us which one.
Request a number →

About Neutral Tandem

Neutral Tandem operates as a neutral tandem provider, interconnecting competitive carriers including wireless, wireline, cable, and VoIP providers for local and long-distance traffic exchange, bypassing incumbent LEC tandems. It primarily serves wholesale carriers seeking diverse routing and PSTN gateway access across major US markets, connecting over 600 switches and 130 million numbers. The company has expanded globally with voice and data services following acquisitions.

Sources: Neutral Tandem - Products, Competitors, Financials, Employees ... · [PDF] Tandem Diversity and the Public Switched Telephone Network: Neutral Tandem: An Independent Solution for Tandem Diversity · Interview with Neutral Tandem - YouTube

Toll-free side: Related toll-free RespOrg: Inteliquent (code HPC01). View on resporgs.com →

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

Carrier website

Homepage screenshot of Onvoy LLC - SD sinch.com: opens in a new tab

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
08
09
10
11
12
13
14
15
16
17
18
19
109 20
104 21
22
23
24
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 issued
(605) 888-3733 ★ UTTERED Free SD 2025-03-20

Want one of these or something similar? Request the number from this carrier and we'll route the request.

Most recent assignments

Last 18 months. These blocks were issued by Onvoy LLC - SD since 2024-11-14.

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