$ query “AS16905” --type=asn → 1 result(s)

AS16905 · LEARN-RESEARCH

LEARN

AS16905 is operated by LEARN and serves as a mid-size transit provider, based in the United States since 2000. The system announces 1 280 IPv4 addresses, and supports IPv6. Most of its address space is geolocated to the United States.

Basic Information

Country
🇺🇸 United States
Category
Education/Research
Network Role
Mid-size Transit
Data Origin
Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
Registered
June 28, 2000
Last Changed
March 04, 2026
Last Seen
April 29, 2026 (active)

Prefix Summary

IPv4 Prefixes (raw / aggregated)
5 / 4
IPv6 Prefixes (raw / aggregated)
2 / 2
IPv4 Addresses
1 280
Largest IPv4 Prefix
/23 (512 addresses)
Largest IPv6 Prefix
/48
Geolocated Countries
🇺🇸 United States (1 280 IPs)
Prefix Changed
March 04, 2026

Reputation

Reputation
Pristine — 0 flagged IPs

Connectivity Summary

Upstream Providers
1 upstream providing transit
Peers
4 networks exchanging traffic without transit
Downstream Customers
28 downstreams buying transit
Degree
33 unique BGP neighbors
Reach
48 networks in customer cone

Upstream Providers (1)

  • AS11537 — INTERNET2-RESEARCH-EDU

Prefix Lists

IPv4 Prefixes (5 total)

  • 74.200.186.0/23 (512 addresses (/23 prefix))
  • 74.200.148.0/24 (256 addresses (/24 prefix))
  • 74.200.150.0/24 (256 addresses (/24 prefix))
  • 74.200.179.0/24 (256 addresses (/24 prefix))

IPv6 Prefixes (2 total)

  • 2607:f928:2::/48
  • 2607:f928:12::/48