213.18.192.0/19 - Montgomery County Government, Maryland (AS54439)
CIDR
213.18.192.0/19
IP Version
IPv4
Addresses
8.1K
Mask
/19 (255.255.224.0)
Country
🇺🇸 United States
City
Rockville
RIR
ARIN
Status
allocated
Allocated
2025-10-21
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
Swipe sideways to see all columns →
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 213.18.192.0/19 | AS54439 MCGM-FIBERNET3 - Montgomery County Government, Maryland | No ROA | - | 2026-10-11 |
More-Specific Announcements
9 more-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 213.18.192.0/24 | AS54439 MCGM-FIBERNET3 - Montgomery County Government, Maryland | No ROA | - | 2026-10-11 |
| 213.18.193.0/24 | AS54439 MCGM-FIBERNET3 - Montgomery County Government, Maryland | No ROA | - | 2026-10-11 |
| 213.18.194.0/24 | AS54439 MCGM-FIBERNET3 - Montgomery County Government, Maryland | No ROA | - | 2026-10-11 |
| 213.18.195.0/24 | AS54439 MCGM-FIBERNET3 - Montgomery County Government, Maryland | No ROA | - | 2026-10-11 |
| 213.18.196.0/24 | AS54439 MCGM-FIBERNET3 - Montgomery County Government, Maryland | No ROA | - | 2026-10-11 |
| 213.18.197.0/24 | AS54439 MCGM-FIBERNET3 - Montgomery County Government, Maryland | No ROA | - | 2026-10-11 |
| 213.18.198.0/24 | AS54439 MCGM-FIBERNET3 - Montgomery County Government, Maryland | No ROA | - | 2026-10-11 |
| 213.18.199.0/24 | AS54439 MCGM-FIBERNET3 - Montgomery County Government, Maryland | No ROA | - | 2026-10-11 |
| 213.18.200.0/24 | AS54439 MCGM-FIBERNET3 - Montgomery County Government, Maryland | No ROA | - | 2026-10-11 |
Transfer History
Registry transfers of 213.18.192.0/19, blocks inside it, or blocks containing it.
- 213.18.192.0/19inter-RIRTransfer ·
Related Prefixes
Geolocation
Learn more
- RPKI and ROAs explainedWhat RPKI valid, invalid and no ROA mean
- RPKI validatorCheck ROA coverage for any prefix or ASN
- What is BGP?How prefixes are announced and routed
- More-specific prefixesGlossary: covering and more-specific routes
- IPv4 transfers in the ARIN regionWho bought and sold address space recently
API
Open https://api.ipctl.io/v1/prefix/213.18.192.0/19Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/213.18.192.0/19" | jq
External Links