Five9 InC
d/b/a Five9 Inc
4000 Executive Pkwy, Suite 400
San Ramon, CA 94583-4257
five9.com
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 →
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HQ: 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
Area codes
| NPA | Blocks | Recent | Last |
|---|---|---|---|
| 720 | 5 | · | 2023-05-18 |
| 213 | 4 | · | 2023-05-22 |
| 216 | 4 | · | 2023-12-27 |
| 239 | 4 | · | 2024-10-08 |
| 262 | 4 | · | 2024-06-05 |
| 279 | 4 | · | 2024-10-09 |
| 283 | 4 | · | 2024-10-08 |
| 313 | 4 | · | 2023-05-26 |
| 332 | 4 | · | 2023-05-23 |
| 346 | 4 | · | 2023-05-18 |
| 352 | 4 | · | 2024-03-26 |
| 385 | 4 | · | 2023-12-27 |
| 386 | 4 | · | 2024-10-07 |
| 404 | 4 | · | 2023-05-23 |
| 463 | 4 | · | 2024-10-07 |
| 504 | 4 | · | 2024-10-08 |
| 557 | 4 | · | 2023-06-15 |
| 572 | 4 | · | 2024-10-08 |
| 628 | 4 | · | 2023-05-26 |
| 656 | 4 | · | 2023-05-16 |
| 659 | 4 | · | 2024-10-08 |
| 667 | 4 | · | 2023-12-27 |
| 689 | 4 | · | 2023-05-15 |
| 719 | 4 | · | 2024-11-07 |
| 726 | 4 | · | 2023-06-05 |
| 737 | 4 | · | 2024-10-07 |
| 743 | 4 | · | 2024-10-08 |
| 771 | 4 | · | 2023-05-16 |
| 775 | 4 | · | 2024-03-18 |
| 786 | 4 | · | 2023-06-02 |
| 804 | 4 | · | 2024-03-15 |
| 816 | 4 | · | 2024-03-15 |
| 856 | 4 | · | 2024-03-15 |
| 904 | 4 | · | 2024-03-15 |
| 908 | 4 | · | 2023-05-15 |
| 945 | 4 | · | 2023-05-16 |
| 948 | 4 | · | 2024-10-08 |
| 980 | 4 | · | 2023-05-22 |
| 984 | 4 | · | 2024-03-15 |
| 206 | 2 | · | 2023-12-10 |
| 351 | 2 | · | 2023-03-14 |
| 380 | 2 | · | 2023-12-04 |
| 425 | 2 | · | 2024-01-09 |
| 442 | 2 | · | 2023-12-04 |
| 458 | 2 | · | 2023-12-27 |
| 612 | 2 | · | 2023-12-01 |
| 651 | 2 | · | 2023-12-27 |
| 740 | 2 | · | 2023-12-27 |
| 773 | 2 | · | 2023-05-18 |
| 858 | 2 | · | 2024-01-10 |
| 872 | 2 | · | 2023-03-17 |
| 971 | 2 | · | 2023-12-04 |
| 978 | 2 | · | 2023-05-25 |