$ query “AS600” --type=asn → 1 result(s)

AS600 · OARNET-AS

OARnet

AS600 is operated by OARnet and serves as a mid-size transit provider, based in the United States since 1990. The system announces a solid 994 304 IPv4 addresses, including a /16, and supports IPv6. The bulk of its IP address space is in the United States, with additional presence in Australia.

  • Top 5% — Top 5% of all autonomous systems by reach and degree
  • Pioneer — Registered before the year 2000

Basic Information

Country
🇺🇸 United States
Category
Hosting
Network Role
Mid-size Transit
Data Origin
Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
Registered
March 11, 1990
Last Changed
March 04, 2026
Last Seen
April 30, 2026 (active)

Prefix Summary

IPv4 Prefixes (raw / aggregated)
81 / 40
IPv6 Prefixes (raw / aggregated)
2 / 2
IPv4 Addresses
994 304
Largest IPv4 Prefix
/16 (65 536 addresses)
Largest IPv6 Prefix
/32
Geolocated Countries
🇺🇸 United States (1 345 536 IPs), 🇦🇺 Australia (9 472 IPs)
Prefix Changed
March 04, 2026

Reputation

Reputation
Pristine — 0 flagged IPs

Connectivity Summary

Upstream Providers
4 upstreams providing transit
Peers
21 networks exchanging traffic without transit
Downstream Customers
56 downstreams buying transit
Unclassified
1 unclassified BGP neighbor
Degree
82 unique BGP neighbors
Reach
58 networks in customer cone

Upstream Providers (4)

  • AS6939 — HURRICANE
  • AS3356 — LEVEL3 (Tier-1 transit)
  • AS7018 — ATT-INTERNET4 (Tier-1 transit)
  • AS11164 — INTERNET2-I2PX

Prefix Lists

IPv4 Prefixes (81 total)

  • 198.30.0.0/16 (65 536 addresses (/16 prefix))
  • 206.244.0.0/16 (65 536 addresses (/16 prefix))
  • 131.187.0.0/16 (65 536 addresses (/16 prefix))
  • 208.108.0.0/16 (65 536 addresses (/16 prefix))
  • 130.108.0.0/16 (65 536 addresses (/16 prefix))
  • 199.18.0.0/16 (65 536 addresses (/16 prefix))
  • 206.21.0.0/16 (65 536 addresses (/16 prefix))
  • 140.220.0.0/16 (65 536 addresses (/16 prefix))
  • 199.218.0.0/16 (65 536 addresses (/16 prefix))
  • 205.133.0.0/16 (65 536 addresses (/16 prefix))
  • 144.50.0.0/16 (65 536 addresses (/16 prefix))
  • 163.11.0.0/16 (65 536 addresses (/16 prefix))
  • 157.134.0.0/16 (65 536 addresses (/16 prefix))
  • 143.246.0.0/17 (32 768 addresses (/17 prefix))
  • 140.141.0.0/17 (32 768 addresses (/17 prefix))
  • 146.85.0.0/18 (16 384 addresses (/18 prefix))
  • 136.227.0.0/18 (16 384 addresses (/18 prefix))
  • 146.85.224.0/19 (8 192 addresses (/19 prefix))
  • 146.85.160.0/19 (8 192 addresses (/19 prefix))
  • 140.228.0.0/20 (4 096 addresses (/20 prefix))
  • 64.254.64.0/20 (4 096 addresses (/20 prefix))
  • 192.232.16.0/20 (4 096 addresses (/20 prefix))
  • 204.57.8.0/21 (2 048 addresses (/21 prefix))
  • 192.148.240.0/21 (2 048 addresses (/21 prefix))
  • 136.227.128.0/21 (2 048 addresses (/21 prefix))
  • 192.153.32.0/21 (2 048 addresses (/21 prefix))
  • 192.148.236.0/22 (1 024 addresses (/22 prefix))
  • 192.148.248.0/22 (1 024 addresses (/22 prefix))
  • 192.153.28.0/22 (1 024 addresses (/22 prefix))
  • 192.88.192.0/22 (1 024 addresses (/22 prefix))
  • 192.153.40.0/23 (512 addresses (/23 prefix))
  • 192.153.26.0/23 (512 addresses (/23 prefix))
  • 192.148.235.0/24 (256 addresses (/24 prefix))
  • 199.120.181.0/24 (256 addresses (/24 prefix))
  • 192.150.115.0/24 (256 addresses (/24 prefix))
  • 204.128.217.0/24 (256 addresses (/24 prefix))
  • 156.63.208.0/24 (256 addresses (/24 prefix))
  • 192.68.223.0/24 (256 addresses (/24 prefix))
  • 192.131.123.0/24 (256 addresses (/24 prefix))
  • 131.238.28.0/24 (256 addresses (/24 prefix))

IPv6 Prefixes (2 total)

  • 2607:ab00::/32
  • 2610:a8::/32