NPA 855
Opened 2010. Past the halfway point.
About NPA 855
855 opened in October 2010 after a decade-long gap. It absorbed a lot of growth from companies wanting toll-free numbers without having to draw from disconnect aging on older prefixes. Approaching 80% saturated.
Status decomposition over time
Every toll free number sits in exactly one status: working (in active use), assigned (allocated but not yet routing), reserved (held briefly during pickup), disconnect (aging out before returning to spare), transit (mid-port between RespOrgs), unavailable (held by Somos), or suspend. Watch the mix shift as the prefix has matured.
- Working5.9M
- Assigned0
- Reserved1K
- Disconnect64K
- Transit294K
- Unavail2K
- Suspend0
Fill % over time
Percentage of NPA 855's 7,980,000 (or 7,870,094 for 800) total possible numbers that are currently in use. 100% means every assignable number has been claimed.
Top RespOrgs holding NPA 855
Ten RespOrgs sit on most of NPA 855's working inventory. Click any name for their full profile: trajectory, opportunism index, vanity holdings, and how their NPA mix compares to the industry total above.
| RespOrg | Numbers in NPA 855 | Share of working inventory |
|---|---|---|
| Twilio (TW) | 1,182,964 | 20.2% |
| Bandwidth (JY) | 914,259 | 15.6% |
| Verizon Business (VZ) | 532,033 | 9.1% |
| Invoca (YV) | 314,631 | 5.4% |
| Mayfair Communication (MY) | 236,824 | 4.0% |
| AT&T (AT) | 212,745 | 3.6% |
| Inteliquent (LQ) | 202,700 | 3.5% |
| Five 9, Inc. (BP) | 168,281 | 2.9% |
| Toll Free Management (MT) | 148,637 | 2.5% |
| Signal One (SO) | 131,479 | 2.2% |