$ query “AS23028” --type=asn → 1 result(s)

AS23028 · TEAM-CYMRU

Team Cymru Inc.

AS23028 is owned by Team Cymru Inc. and is a residential access provider, established in the United States in 2002. The system announces a respectable 17 920 IPv4 addresses, and supports IPv6. Most of its address space is geolocated to the United States, with additional presence in Australia.

Basic Information

Country
🇺🇸 United States
Category
Internet Service Provider
Network Role
Access Provider
Data Origin
Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
Registered
January 04, 2002
Last Changed
October 01, 2026
Last Seen
October 23, 2026 (active)

Prefix Summary

IPv4 Prefixes (raw / aggregated)
30 / 7
IPv6 Prefixes (raw / aggregated)
16 / 2
IPv4 Addresses
17 920
Largest IPv4 Prefix
/18 (16 384 addresses)
Largest IPv6 Prefix
/32
Geolocated Countries
🇺🇸 United States (17 664 IPs), 🇦🇺 Australia (256 IPs)
Prefix Changed
October 16, 2026

Reputation

Reputation
Pristine — 0 flagged IPs

Connectivity Summary

Upstream Providers
5 upstreams providing transit
Peers
632 networks exchanging traffic without transit
Downstream Customers
1 downstream buying transit
Unclassified
1 unclassified BGP neighbor
Degree
639 unique BGP neighbors
Reach
1 network in customer cone

Upstream Providers (5)

  • AS6939 — HURRICANE
  • AS6461 — ZAYO-6461 (Tier-1 transit)
  • AS3257 — GTT-BACKBONE (Tier-1 transit)
  • AS2914 — NTT-DATA-2914 (Tier-1 transit)
  • AS23352 — SERVERCENTRAL

Prefix Lists

IPv4 Prefixes (30 total)

  • 216.31.0.0/18 (16 384 addresses (/18 prefix))
  • 38.229.33.0/24 (256 addresses (/24 prefix))
  • 38.229.252.0/24 (256 addresses (/24 prefix))
  • 68.22.187.0/24 (256 addresses (/24 prefix))
  • 192.138.226.0/24 (256 addresses (/24 prefix))
  • 203.28.18.0/24 (256 addresses (/24 prefix))
  • 204.74.64.0/24 (256 addresses (/24 prefix))

IPv6 Prefixes (16 total)

  • 2604:8800::/32
  • 2620:0:6b0::/48