$ query “AS166” --type=asn → 1 result(s)
AS166 — IDA-AS
Institute for Defense Analyses
AS166 is an educational stub network operated by Institute for Defense Analyses, established in the United States in 1988. The network announces a solid 131 328 IPv4 addresses, including a /16. No IPv6 support — it's 2026, just saying.
- Pioneer — Registered before the year 2000
Basic Information
- Country
- 🇺🇸 United States
- Category
- Education/Research
- Network Role
- Stub Network
- Data Origin
- Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
- Registered
- March 29, 1988
- Last Changed
- March 04, 2026
- Last Seen
- March 05, 2026
Prefix Summary
- IPv4 Prefixes (raw / aggregated)
- 17 / 3
- IPv6 Prefixes (raw / aggregated)
- 0 / 0
- IPv4 Addresses
- 131 328
- Largest IPv4 Prefix
- /16 (65 536 addresses)
- Geolocated Countries
- 🇺🇸 US (4 IPs)
- Prefix Changed
- March 04, 2026
Reputation
- Reputation
- Pristine — 0 flagged IPs out of 131 328 total (0.00%)
Connectivity Summary
- Upstream Providers
- 2 upstream autonomous systems providing transit
- Peers
- 0 autonomous systems exchanging traffic without transit fees
- Downstream Customers
- 0 downstream autonomous systems buying transit
- Degree
- 2 unique BGP neighbors (providers + customers + peers)
- Reach
- 0 — customer cone size measuring network influence
- Degree Rank
- #29 303
Upstream Providers (2)
Prefix Lists
IPv4 Prefixes (17 total)
- 129.246.0.0/16 (65 536 addresses)
- 164.217.0.0/16 (65 536 addresses)
- 198.133.241.0/24 (256 addresses)