166.56.0.0/16
🇺🇸CIDR
166.56.0.0/16
IP Version
IPv4
Addresses
65.5K
Mask
/16 (255.255.0.0)
Country
🇺🇸 United States
City
Ashburn
RIR
ARIN
Status
allocated
Allocated
3/24/1993
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 166.56.0.0/16 | AS3371MCI-ASN - Verizon Business | No ROA | — | 5/31/2026 |
Covering Prefix
4 less-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 166.56.32.0/19 | AS3372MCI-ASN - Verizon Business | No ROA | — | 5/31/2026 |
| 166.56.64.0/19 | AS3372MCI-ASN - Verizon Business | No ROA | — | 5/31/2026 |
| 166.56.96.0/19 | AS3372MCI-ASN - Verizon Business | No ROA | — | 5/31/2026 |
| 166.56.248.0/23 | AS3372MCI-ASN - Verizon Business | No ROA | — | 5/31/2026 |
Origin ASN
AS3371
MCI-ASN - Verizon Business
Geolocation
API
Open https://api.ipctl.io/v1/prefix/166.56.0.0/16Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/166.56.0.0/16" | jq
External Links