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AS23028 Team Cymru Inc.

TEAM-CYMRU - Team Cymru Inc. · registered in the United States

IPv4 addresses17,9207 prefixes · <0.001% of announced IPv4
Rank in United States#2,226largest network in US by IPv4 space, of 18,338 · <0.01% of US
Rank worldwide#6,527of 79,396 networks with IPv4
IPv61 x /32 (65,536 x /48)41 prefixes
CountryUnited States18,679 ASNs registered there
Open AS23028 in ASN lookup Look up an IP in this network (38.229.33.1) All networks in United States

IPv4 prefixes

All 7 prefixes, in address order.

  • 38.229.33.0/24
  • 38.229.252.0/24
  • 68.22.187.0/24
  • 192.138.226.0/24
  • 203.28.18.0/24
  • 204.74.64.0/24
  • 216.31.0.0/18

IPv6 prefixes

All 41 prefixes.

  • 2604:8800::/43
  • 2604:8800:20::/48
  • 2604:8800:21::/48
  • 2604:8800:22::/47
  • 2604:8800:24::/46
  • 2604:8800:28::/45
  • 2604:8800:30::/44
  • 2604:8800:40::/44
  • 2604:8800:50::/46
  • 2604:8800:54::/46
  • 2604:8800:58::/45
  • 2604:8800:60::/48
  • 2604:8800:61::/48
  • 2604:8800:62::/47
  • 2604:8800:64::/46
  • 2604:8800:68::/45
  • 2604:8800:70::/44
  • 2604:8800:80::/41
  • 2604:8800:100::/40
  • 2604:8800:200::/39
  • 2604:8800:400::/38
  • 2604:8800:800::/37
  • 2604:8800:1000::/36
  • 2604:8800:2000::/35
  • 2604:8800:4000::/34
  • 2604:8800:8000::/34
  • 2604:8800:c000::/35
  • 2604:8800:e000::/36
  • 2604:8800:f000::/37
  • 2604:8800:f800::/38
  • 2604:8800:fc00::/39
  • 2604:8800:fe00::/40
  • 2604:8800:ff00::/41
  • 2604:8800:ff80::/42
  • 2604:8800:ffc0::/43
  • 2604:8800:ffe0::/44
  • 2604:8800:fff0::/45
  • 2604:8800:fff8::/46
  • 2604:8800:fffc::/47
  • 2604:8800:fffe::/48
  • 2620:0:6b0::/48

Other ASNs named Team Cymru Inc.

1 other network uses the same organisation name; together with AS23028 they announce 17,920 IPv4 addresses.

ASNNameIPv4 addresses
AS19388TEAM-CYMRU-3 - Team Cymru Inc. USIPv6 only

Similar-sized networks in United States

ASNNameIPv4 addresses
AS27005#2223 PNPT-ASN - Pinpoint Communications, Inc.17,920
AS62809#2224 EXPOHL - VOLT BROADBAND17,920
AS20335#2225 UDT - United Data Technologies, Inc.17,920
AS25769#2227 GVTEL - Garden Valley Telephone Company17,920
AS32890#2228 BTC-AS-1 - Beehive Telephone Company, Inc.17,920
AS397453#2229 MEEKER-01 - Meeker Cooperative Light & Power Association17,920

IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources