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.
- Working6.1M
- Assigned36
- Reserved842
- Disconnect47K
- Transit227K
- 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) | 1,161,441 | 19.0% |
| Bandwidth (JY) | 922,758 | 15.1% |
| Verizon Business (VZ) | 534,741 | 8.7% |
| Invoca (YV) | 314,673 | 5.1% |
| Toll Free Management (MT) | 291,840 | 4.8% |
| AT&T (AT) | 231,458 | 3.8% |
| Mayfair Communication (MY) | 229,089 | 3.7% |
| Inteliquent (LQ) | 201,071 | 3.3% |
| Five 9, Inc. (BP) | 168,725 | 2.8% |
| Pestilence Labs LLC (EF) | 150,818 | 2.5% |