199.16.200.0/21
🇺🇸CIDR
199.16.200.0/21
IP Version
IPv4
Addresses
2K
Mask
/21 (255.255.248.0)
Country
🇺🇸 United States
City
Washington D.C.
RIR
ARIN
Status
allocated
Allocated
1/18/2019
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 199.16.200.0/21 | AS19299NPC-P1 - The Northern Trust Company | No ROA | RADB | 5/31/2026 |
Covering Prefix
6 less-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 199.16.200.0/22 | AS14379N-T-C - The Northern Trust Company | No ROA | — | 5/31/2026 |
| 199.16.204.0/22 | AS19299NPC-P1 - The Northern Trust Company | No ROA | — | 5/31/2026 |
| 199.16.204.0/23 | AS14379N-T-C - The Northern Trust Company | No ROA | — | 5/31/2026 |
| 199.16.206.0/23 | AS14379N-T-C - The Northern Trust Company | No ROA | — | 5/31/2026 |
| 199.16.202.0/23 | AS19299NPC-P1 - The Northern Trust Company | No ROA | — | 5/31/2026 |
| 199.16.200.0/23 | AS19299NPC-P1 - The Northern Trust Company | No ROA | — | 5/31/2026 |
Geolocation
API
Open https://api.ipctl.io/v1/prefix/199.16.200.0/21Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/199.16.200.0/21" | jq
External Links