166.40.0.0/16
🇺🇸IPv4ARINallocatedNo ROA
CIDR
166.40.0.0/16
IP Version
IPv4
Addresses
65.5K
Mask
/16 (255.255.0.0)
Country
🇺🇸 United States
City
Washington D.C.
RIR
ARIN
Status
allocated
Allocated
12/9/1996
Announced BGP Routes
0 of 0 routesRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| This prefix is not currently announced in BGP. See covering prefix below. | ||||
Covering Prefix
10 less-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 166.32.0.0/12 | AS3371MCI-ASN - Verizon Business | No ROA | — | 5/31/2026 |
| 166.40.112.0/20 | AS3372MCI-ASN - Verizon Business | No ROA | — | 5/31/2026 |
| 166.40.216.0/21 | AS3372MCI-ASN - Verizon Business | No ROA | — | 5/31/2026 |
| 166.40.166.0/23 | AS3372MCI-ASN - Verizon Business | No ROA | — | 5/31/2026 |
| 166.40.164.0/23 | AS3372MCI-ASN - Verizon Business | No ROA | — | 5/31/2026 |
| 166.40.172.0/23 | AS3372MCI-ASN - Verizon Business | No ROA | — | 5/31/2026 |
| 166.40.162.0/24 | AS3372MCI-ASN - Verizon Business | No ROA | — | 5/31/2026 |
| 166.40.169.0/24 | AS3372MCI-ASN - Verizon Business | No ROA | — | 5/31/2026 |
| 166.40.163.0/24 | AS3372MCI-ASN - Verizon Business | No ROA | — | 5/31/2026 |
| 166.40.161.0/24 | AS3372MCI-ASN - Verizon Business | No ROA | — | 5/31/2026 |
Geolocation
API
Open https://api.ipctl.io/v1/prefix/166.40.0.0/16Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/166.40.0.0/16" | jq
External Links