209.66.64.0/18
🇺🇸CIDR
209.66.64.0/18
IP Version
IPv4
Addresses
16.3K
Mask
/18 (255.255.192.0)
Country
🇺🇸 United States
City
San Francisco
RIR
ARIN
Status
allocated
Allocated
4/9/1997
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 209.66.64.0/18 | AS6461ZAYO-6461 - Zayo Bandwidth | Valid | ARIN | 5/31/2026 |
Covering Prefix
12 less-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 209.66.100.0/23 | AS3925ICO-SV - ICOnetworks | Valid | — | 5/31/2026 |
| 209.66.65.0/24 | AS7752THRES - THRESHOLD COMMUNICATIONS,INC. | Valid | — | 5/31/2026 |
| 209.66.103.0/24 | AS13431MILLENNIUM-AS - Millennium Partners, L.P. | Valid | — | 5/31/2026 |
| 209.66.116.0/24 | AS14011DESIGNDATA - Design Data Systems, Inc. | Valid | — | 5/31/2026 |
| 209.66.90.0/24 | AS17245APEX - Apex Clearing Solutions, LLC | Valid | — | 5/31/2026 |
| 209.66.89.0/24 | AS22509BANFIELD - Banfield | Valid | — | 5/31/2026 |
| 209.66.124.0/24 | AS25906IVGNCB - Life Technologies Corp. | Valid | — | 5/31/2026 |
| 209.66.93.0/24 | AS40920 | Valid | — | 5/31/2026 |
| 209.66.107.0/24 | AS40934FORTINET - Fortinet Inc. | Valid | — | 5/31/2026 |
| 209.66.119.0/24 | AS47074AEG - AEG | Valid | — | 5/31/2026 |
| 209.66.73.0/24 | AS393948GSUSA420 - Girl Scouts of the United States of America | Valid | — | 5/31/2026 |
| 209.66.127.0/24 | AS399117GLI-CAR-DC1 - Greyhound Lines, Inc. | Valid | — | 5/31/2026 |
Origin ASN
AS6461
ZAYO-6461 - Zayo Bandwidth
Geolocation
API
Open https://api.ipctl.io/v1/prefix/209.66.64.0/18Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/209.66.64.0/18" | jq
External Links