HomePrefix Lookup129.6.120.0/21

129.6.120.0/21

🇺🇸
IPv4ARINannouncedAS49US-NATIONAL-INSTITUTE-OF-STANDARDS-AND-TECHNOLOGY - National Institute of Standards and Technology RPKI Valid
CIDR
129.6.120.0/21
IP Version
IPv4
Addresses
2K
Mask
/21 (255.255.248.0)
Country
🇺🇸 United States
City
Gaithersburg
RIR
ARIN
Status
announced
Allocated
-

Announced BGP Routes

1 of 1 route
RPKI:
IRR:
PrefixOrigin ASRPKIIRRLast Seen
129.6.120.0/21AS49US-NATIONAL-INSTITUTE-OF-STANDARDS-AND-TECHNOLOGY - National Institute of Standards and Technology Valid
ARIN
5/31/2026

Covering Prefix

1 less-specific announcement
PrefixOrigin ASRPKIIRRLast Seen
129.6.64.0/18AS49US-NATIONAL-INSTITUTE-OF-STANDARDS-AND-TECHNOLOGY - National Institute of Standards and Technology Valid—5/31/2026

RPKI ROAs

2
PrefixOriginMax LengthTrust Anchor
129.6.120.0/21AS49/21arin
129.6.64.0/18AS49/18arin

IRR Route Objects

1
OriginRegistryMaintainerModified
AS49ARINMNT-NIST-Z5/19/2025
Origin ASN
AS49
US-NATIONAL-INSTITUTE-OF-STANDARDS-AND-TECHNOLOGY - National Institute of Standards and Technology
Geolocation
Country🇺🇸United StatesUS
RegionMaryland
CityGaithersburg
Coordinates39.1402, -77.2185 ↗
API
Open
GEThttps://api.ipctl.io/v1/prefix/129.6.120.0/21

Returns prefix allocation, BGP routes, and more-specific subnets.

curl -s "https://api.ipctl.io/v1/prefix/129.6.120.0/21" | jq
External Links
RIPEstat Hurricane Electric BGP