HomeASN LookupAS637

AS637

DNIC-ASBLK-00616-00665 - United States Department of Defense (DoD)

Announced Prefixes (BGP)
566total
566 IPv40 IPv6
IPv4 Addresses ⓘ
Allocated (RIR)524,288
Announced (BGP)1.1M
IPv6 Addresses ⓘ
Allocated (RIR)0
Announced (BGP)0
Prefix Limit (IPv4)
2,000
Prefix Limit (IPv6)
5
Allocated
—

Announced Prefixes

(BGP)566
|
Prefix
RPKI
IRR
Last Seen
137.232.161.0/24
No ROA—5/25/2026
137.232.194.0/24
No ROA—5/25/2026
137.233.5.0/24
No ROA—5/25/2026
137.234.0.0/22
No ROA—5/25/2026
137.234.26.0/24
No ROA—5/25/2026
137.234.64.0/22
No ROA—5/25/2026
137.234.76.0/24
No ROA—5/25/2026
137.234.80.0/22
No ROA—5/25/2026
137.234.84.0/24
No ROA—5/25/2026
137.234.86.0/24
No ROA—5/25/2026
1–10 of 566
1 / 57

Allocated Prefixes

(RIR)8
Prefix
Country
RIR
Status
138.156.0.0/16🇺🇸 USARINallocated
138.158.0.0/16🇺🇸 USARINallocated
138.168.0.0/16🇺🇸 USARINallocated
158.236.0.0/16🇺🇸 USARINallocated
158.237.0.0/16🇺🇸 USARINallocated
158.238.0.0/16🇺🇸 USARINallocated
158.243.0.0/16🇺🇸 USARINallocated
158.245.0.0/16🇺🇸 USARINallocated
ASPA
No ASPA
External Links
Hurricane Electric BGPRIPEstatPeeringDB
API
Open
GEThttps://api.ipctl.io/v1/asn/637

Returns ASN details, announced prefixes, and BGP routing data.

curl -s "https://api.ipctl.io/v1/asn/637" | jq