$ query “AS3” --type=asn → 1 result(s)

AS3 · AS3

Adaptive Systems A/S

AS3 is operated by Adaptive Systems A/S and serves as an educational/research access provider, registered in the United States since 2015. The system announces an impressive 1.8 million IPv4 addresses, including a /13, and supports IPv6. Most of its address space is geolocated to the United States, with additional presence in Australia and Bangladesh, and smaller footprints in 2 additional countries. Prefix announcements for this AS were recently updated.

Basic Information

Country
🇺🇸 United States
Category
Education/Research
Network Role
Access Provider
Data Origin
Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
Registered
December 21, 2015
Last Changed
May 10, 2026
Last Seen
June 27, 2026 (active)

Prefix Summary

IPv4 Prefixes (raw / aggregated)
97 / 24
IPv6 Prefixes (raw / aggregated)
10 / 7
IPv4 Addresses
1 839 104
Largest IPv4 Prefix
/13 (524 288 addresses)
Largest IPv6 Prefix
/31
Geolocated Countries
🇺🇸 United States (2 033 664 IPs), 🇦🇺 Australia (1 792 IPs), 🇧🇩 Bangladesh (1 024 IPs) and 2 more
Prefix Changed
June 28, 2026

Reputation

Reputation
Good — 4 flagged IPs out of 1 839 104 total (0.00%)
Tor Exit Nodes
1 known Tor exit nodes in this network

Connectivity Summary

Upstream Providers
11 upstreams providing transit
Peers
4 networks exchanging traffic without transit
Downstream Customers
3 downstreams buying transit
Unclassified
5 unclassified BGP neighbors
Degree
23 unique BGP neighbors
Reach
6 networks in customer cone

Upstream Providers (11)

Prefix Lists

IPv4 Prefixes (97 total)

  • 18.8.0.0/13 (524 288 addresses (/13 prefix))
  • 18.4.0.0/14 (262 144 addresses (/14 prefix))
  • 18.26.0.0/15 (131 072 addresses (/15 prefix))
  • 18.0.0.0/15 (131 072 addresses (/15 prefix))
  • 18.16.0.0/15 (131 072 addresses (/15 prefix))
  • 128.30.0.0/15 (131 072 addresses (/15 prefix))
  • 18.22.0.0/15 (131 072 addresses (/15 prefix))
  • 18.25.0.0/16 (65 536 addresses (/16 prefix))
  • 18.29.0.0/16 (65 536 addresses (/16 prefix))
  • 18.31.0.0/16 (65 536 addresses (/16 prefix))
  • 18.3.0.0/16 (65 536 addresses (/16 prefix))
  • 18.18.0.0/16 (65 536 addresses (/16 prefix))
  • 128.52.0.0/16 (65 536 addresses (/16 prefix))
  • 192.52.62.0/23 (512 addresses (/23 prefix))
  • 192.52.64.0/23 (512 addresses (/23 prefix))
  • 45.228.74.0/23 (512 addresses (/23 prefix))
  • 103.39.120.0/23 (512 addresses (/23 prefix))
  • 128.201.192.0/23 (512 addresses (/23 prefix))
  • 45.228.73.0/24 (256 addresses (/24 prefix))
  • 192.52.61.0/24 (256 addresses (/24 prefix))
  • 128.201.194.0/24 (256 addresses (/24 prefix))
  • 45.170.62.0/24 (256 addresses (/24 prefix))
  • 193.242.190.0/24 (256 addresses (/24 prefix))
  • 194.147.226.0/24 (256 addresses (/24 prefix))

IPv6 Prefixes (10 total)

  • 2603:4000::/31
  • 2603:4008::/31
  • 2603:4010::/31
  • 2603:4007::/32
  • 2603:400a::/32
  • 2804:35c8::/32
  • 2804:3f58:1000::/36