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AS33566 Knoxville Utilities Board

KUB-FIBER-01 - Knoxville Utilities Board · registered in the United States

IPv4 addresses52,22421 prefixes · 0.002% of announced IPv4
Rank in United States#1,472largest network in US by IPv4 space, of 18,338 · <0.01% of US
Rank worldwide#3,850of 79,396 networks with IPv4
IPv637,633 x /4834 prefixes
CountryUnited States18,679 ASNs registered there
Open AS33566 in ASN lookup Look up an IP in this network (162.81.0.1) All networks in United States

IPv4 prefixes

All 21 prefixes, in address order.

  • 162.81.0.0/24
  • 162.81.6.0/23
  • 162.81.8.0/24
  • 162.81.12.0/22
  • 162.81.16.0/20
  • 162.81.32.0/19
  • 162.81.70.0/24
  • 162.81.100.0/22
  • 162.81.104.0/21
  • 162.81.112.0/23
  • 162.81.115.0/24
  • 162.81.116.0/23
  • 162.81.119.0/24
  • 162.81.120.0/24
  • 162.81.128.0/18
  • 162.81.192.0/19
  • 162.81.224.0/21
  • 162.81.232.0/22
  • 162.81.240.0/20
  • 192.147.142.0/23
  • 192.147.144.0/23

IPv6 prefixes

All 34 prefixes.

  • 2606:83c0:c00::/38
  • 2606:83c0:1000::/36
  • 2606:83c0:2000::/37
  • 2606:83c0:3000::/37
  • 2606:83c0:6400::/38
  • 2606:83c0:6800::/37
  • 2606:83c0:7000::/39
  • 2606:83c0:7300::/40
  • 2606:83c0:7400::/39
  • 2606:83c0:7700::/40
  • 2606:83c0:7800::/40
  • 2606:83c0:8000::/37
  • 2606:83c0:9000::/36
  • 2606:83c0:a000::/39
  • 2606:83c0:a200::/42
  • 2606:83c0:a240::/44
  • 2606:83c0:a250::/47
  • 2606:83c0:a252::/47
  • 2606:83c0:a254::/46
  • 2606:83c0:a258::/45
  • 2606:83c0:a260::/43
  • 2606:83c0:a280::/41
  • 2606:83c0:a300::/40
  • 2606:83c0:a400::/38
  • 2606:83c0:a800::/37
  • 2606:83c0:b000::/36
  • 2606:83c0:c000::/36
  • 2606:83c0:d000::/37
  • 2606:83c0:e000::/40
  • 2606:83c0:e400::/40
  • 2606:83c0:e800::/37
  • 2606:83c0:f000::/40
  • 2606:83c0:f400::/40
  • 2606:83c0:f500::/48

Other ASNs named Knoxville Utilities Board

1 other network uses the same organisation name; together with AS33566 they announce 52,480 IPv4 addresses.

ASNNameIPv4 addresses
AS32096KUB-NET - Knoxville Utilities Board US256

Similar-sized networks in United States

ASNNameIPv4 addresses
AS13354#1469 ZC38-AS1 - zColo52,480
AS398535#1470 ESUHSD-ASN-1 - EAST SIDE UNION HIGH SCHOOL DIST52,480
AS14103#1471 ACDNET-ASN1 - ACD.net52,224
AS14742#1473 INTERNAP-BLOCK-4 - Unitas Global51,968
AS16863#1474 HOMESC - Home Telephone Company, Inc.51,968
AS36444#1475 NEXCESS-NET - Liquid Web, L.L.C51,968

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