HomePrefix Lookup137.75.64.0/18

137.75.64.0/18

🇺🇸
IPv4ARINallocatedAS3477NOAA-NWAVE - National Oceanic and Atmospheric Administration RPKI Valid
CIDR
137.75.64.0/18
IP Version
IPv4
Addresses
16.3K
Mask
/18 (255.255.192.0)
Country
🇺🇸 United States
City
Boulder
RIR
ARIN
Status
allocated
Allocated
11/7/1989

Announced BGP Routes

1 of 1 route
RPKI:
IRR:
PrefixOrigin ASRPKIIRRLast Seen
137.75.64.0/18AS3477NOAA-NWAVE - National Oceanic and Atmospheric Administration Valid
ARIN
5/31/2026

Covering Prefix

15 less-specific announcements
PrefixOrigin ASRPKIIRRLast Seen
137.75.88.0/21AS3477NOAA-NWAVE - National Oceanic and Atmospheric Administration Valid—5/31/2026
137.75.72.0/22AS3477NOAA-NWAVE - National Oceanic and Atmospheric Administration Valid—5/31/2026
137.75.76.0/22AS3477NOAA-NWAVE - National Oceanic and Atmospheric Administration Valid—5/31/2026
137.75.80.0/22AS3477NOAA-NWAVE - National Oceanic and Atmospheric Administration Valid—5/31/2026
137.75.96.0/22AS3477NOAA-NWAVE - National Oceanic and Atmospheric Administration Valid—5/31/2026
137.75.100.0/22AS3477NOAA-NWAVE - National Oceanic and Atmospheric Administration Valid—5/31/2026
137.75.68.0/22AS3477NOAA-NWAVE - National Oceanic and Atmospheric Administration Valid—5/31/2026
137.75.108.0/22AS3477NOAA-NWAVE - National Oceanic and Atmospheric Administration Valid—5/31/2026
137.75.112.0/22AS3477NOAA-NWAVE - National Oceanic and Atmospheric Administration Valid—5/31/2026
137.75.116.0/22AS3477NOAA-NWAVE - National Oceanic and Atmospheric Administration Valid—5/31/2026
137.75.124.0/22AS26100NOAA-PACIFIC-REGION-CENTER - National Oceanic and Atmospheric Administration Valid—5/31/2026
137.75.82.0/24AS3477NOAA-NWAVE - National Oceanic and Atmospheric Administration Valid—5/31/2026
137.75.106.0/24AS3477NOAA-NWAVE - National Oceanic and Atmospheric Administration Valid—5/31/2026
137.75.120.0/24AS3477NOAA-NWAVE - National Oceanic and Atmospheric Administration Valid—5/31/2026
137.75.122.0/24AS16550GOOGLE-PRIVATE-CLOUD - Google LLC Valid—5/31/2026

RPKI ROAs

1
PrefixOriginMax LengthTrust Anchor
137.75.64.0/18AS3477/18arin

IRR Route Objects

1
OriginRegistryMaintainerModified
AS3477ARINMNT-NOAABO-Z7/14/2025
Origin ASN
AS3477
NOAA-NWAVE - National Oceanic and Atmospheric Administration
Geolocation
Country🇺🇸United StatesUS
RegionColorado
CityBoulder
Coordinates39.9932, -105.2590 ↗
API
Open
GEThttps://api.ipctl.io/v1/prefix/137.75.64.0/18

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

curl -s "https://api.ipctl.io/v1/prefix/137.75.64.0/18" | jq
External Links
RIPEstat Hurricane Electric BGP