Five9
2021-05-27
2024-11-07
About Five9
Five9 operates a carrier-grade telephony infrastructure and VoIP platform primarily for contact centers and call center software, partnering with telecom carriers to provide voice connectivity. It serves business customers, focusing on cloud-based contact center solutions with compliance features like HIPAA, PCI DSS, and STIR/SHAKEN. Five9 holds OCN(s) and has originated 185 thousand-number blocks, positioning it as a niche IPES provider in the US telecom landscape rather than a traditional retail or wholesale carrier.
- Headquarters: San Ramon, CA
- Services: cloud contact center, VoIP telephony, carrier-grade voice network
Sources: Call Center Telephony Infrastructure Systems - Five9 · What Is a Carrier - What Are Phone Carriers - Five9 · Five9 Review and Pricing Plans in 2026 - Business.com · Contact Center Providers - What Is Five9
Toll-free side: Related toll-free RespOrg: Five 9, Inc. (code BPS01). View on resporgs.com →
Headquarters: San Ramon, CA
Block portfolio at a glance
By age
- Recent (0). Last 18 mo
- Medium (121)
- Old (56)
- Undated (8)
Footprint by state
Stronger blue = more blocks issued in that state. ● marks states with activity in the last 18 months.
- Florida FL · 28
- California CA · 16
- Texas TX · 16
- North Carolina NC · 12
- Ohio OH · 12
- Colorado CO · 9
- Missouri MO · 8
- New Jersey NJ · 8
- Virginia VA · 8
- Alabama AL · 4
- District of Columbia DC · 4
- Georgia GA · 4
Top area codes
Bars show total blocks; red overlay is recent.
Block assignments by year
Member OCNs
1 OCN roll up under Five9.
| OCN | Company name on file | HQ | Type | Total | Recent |
|---|---|---|---|---|---|
| 598J | Five9 InC | San Ramon, CA | IP-Enabled Service / VoIP | 185 | · |