100.0.0.0/12
🇺🇸IPv4ARINallocated RPKI Valid
CIDR
100.0.0.0/12
IP Version
IPv4
Addresses
1M
Mask
/12 (255.240.0.0)
Country
🇺🇸 United States
City
Boston
RIR
ARIN
Status
allocated
Allocated
12/28/2010
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
14 less-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 100.15.0.0/16 | AS701UUNET - Verizon Business | Valid | — | 6/13/2026 |
| 100.1.0.0/16 | AS701UUNET - Verizon Business | No ROA | — | 6/13/2026 |
| 100.2.0.0/16 | AS701UUNET - Verizon Business | Valid | — | 6/13/2026 |
| 100.12.0.0/16 | AS701UUNET - Verizon Business | Valid | — | 6/13/2026 |
| 100.14.0.0/16 | AS701UUNET - Verizon Business | Valid | — | 6/13/2026 |
| 100.0.0.0/16 | AS701UUNET - Verizon Business | Valid | — | 6/13/2026 |
| 100.6.0.0/16 | AS701UUNET - Verizon Business | Valid | — | 6/13/2026 |
| 100.7.0.0/16 | AS701UUNET - Verizon Business | Valid | — | 6/13/2026 |
| 100.8.0.0/16 | AS701UUNET - Verizon Business | Valid | — | 6/13/2026 |
| 100.10.0.0/16 | AS701UUNET - Verizon Business | Valid | — | 6/13/2026 |
| 100.11.0.0/16 | AS701UUNET - Verizon Business | Valid | — | 6/13/2026 |
| 100.4.0.0/17 | AS701UUNET - Verizon Business | Valid | — | 6/13/2026 |
| 100.4.128.0/17 | AS701UUNET - Verizon Business | Valid | — | 6/13/2026 |
| 100.5.64.0/18 | AS3371MCI-ASN - Verizon Business | No ROA | — | 6/13/2026 |
Geolocation
API
Open https://api.ipctl.io/v1/prefix/100.0.0.0/12Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/100.0.0.0/12" | jq
External Links