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
- Assigned1
- Reserved2K
- Disconnect58K
- Transit88K
- 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) | 1,165,258 | 19.0% |
| Bandwidth (JY) | 926,316 | 15.1% |
| Verizon Business (VZ) | 533,281 | 8.7% |
| Invoca (YV) | 314,734 | 5.1% |
| Toll Free Management (MT) | 266,271 | 4.3% |
| Mayfair Communication (MY) | 236,170 | 3.9% |
| AT&T (AT) | 227,541 | 3.7% |
| Inteliquent (LQ) | 202,753 | 3.3% |
| Five 9, Inc. (BP) | 168,641 | 2.8% |
| Pestilence Labs LLC (EF) | 150,818 | 2.5% |