209.57.0.0/16
🇺🇸CIDR
209.57.0.0/16
IP Version
IPv4
Addresses
65.5K
Mask
/16 (255.255.0.0)
Country
🇺🇸 United States
City
Redmond (Downtown)
RIR
ARIN
Status
allocated
Allocated
7/7/2000
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 209.57.0.0/16 | AS2914NTT-DATA-2914 - NTT America, Inc. | Valid | — | 6/1/2026 |
Covering Prefix
9 less-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 209.57.128.0/20 | AS6079RCN-AS - RCN | Valid | — | 6/1/2026 |
| 209.57.144.0/20 | AS6079RCN-AS - RCN | Valid | — | 6/1/2026 |
| 209.57.160.0/20 | AS6079RCN-AS - RCN | Valid | — | 6/1/2026 |
| 209.57.176.0/20 | AS6079RCN-AS - RCN | Valid | — | 6/1/2026 |
| 209.57.192.0/20 | AS6079RCN-AS - RCN | Valid | — | 6/1/2026 |
| 209.57.208.0/20 | AS6079RCN-AS - RCN | Valid | — | 6/1/2026 |
| 209.57.224.0/20 | AS6079RCN-AS - RCN | Valid | — | 6/1/2026 |
| 209.57.240.0/20 | AS6079RCN-AS - RCN | Valid | — | 6/1/2026 |
| 209.57.32.0/24 | AS54468CHMCA - Children's Hospital Medical Center of Akron | Valid | — | 6/1/2026 |
RPKI ROAs
| Prefix | Origin | Max Length | Trust Anchor |
|---|---|---|---|
| 209.57.0.0/16 | AS2914 | /16 | arin |
Origin ASN
AS2914
NTT-DATA-2914 - NTT America, Inc.
Geolocation
API
Open https://api.ipctl.io/v1/prefix/209.57.0.0/16Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/209.57.0.0/16" | jq
External Links