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AS13354 zColo

ZC38-AS1 - zColo · registered in the United States

IPv4 addresses52,48031 prefixes · 0.002% of announced IPv4
Rank in United States#1,469largest network in US by IPv4 space, of 18,338 · <0.01% of US
Rank worldwide#3,841of 79,396 networks with IPv4
IPv665,533 x /4833 prefixes
CountryUnited States18,679 ASNs registered there
Open AS13354 in ASN lookup Look up an IP in this network (67.211.32.1) All networks in United States

IPv4 prefixes

All 31 prefixes, in address order.

  • 67.211.32.0/20
  • 67.211.48.0/24
  • 67.211.50.0/23
  • 67.211.52.0/24
  • 67.211.54.0/23
  • 67.211.58.0/23
  • 67.211.60.0/22
  • 74.124.0.0/20
  • 74.124.16.0/23
  • 74.124.20.0/22
  • 74.124.24.0/23
  • 74.124.28.0/22
  • 108.60.192.0/19
  • 108.166.160.0/20
  • 108.166.176.0/22
  • 108.166.180.0/23
  • 108.166.183.0/24
  • 108.166.184.0/23
  • 108.166.186.0/24
  • 108.166.188.0/22
  • 170.76.204.0/24
  • 198.154.96.0/19
  • 208.78.216.0/21
  • 209.105.224.0/20
  • 209.105.240.0/22
  • 209.105.244.0/23
  • 209.105.246.0/24
  • 209.105.248.0/23
  • 209.105.250.0/24
  • 209.105.252.0/22
  • 216.172.96.0/20

IPv6 prefixes

All 33 prefixes.

  • 2607:1400::/48
  • 2607:f348::/36
  • 2607:f348:1000::/44
  • 2607:f348:1010::/45
  • 2607:f348:1018::/46
  • 2607:f348:101c::/47
  • 2607:f348:101e::/48
  • 2607:f348:1020::/45
  • 2607:f348:1029::/48
  • 2607:f348:102b::/48
  • 2607:f348:102c::/46
  • 2607:f348:1030::/44
  • 2607:f348:1040::/42
  • 2607:f348:1080::/41
  • 2607:f348:1100::/40
  • 2607:f348:1200::/39
  • 2607:f348:1400::/38
  • 2607:f348:1800::/37
  • 2607:f348:2000::/36
  • 2607:f348:3000::/38
  • 2607:f348:3400::/40
  • 2607:f348:3500::/41
  • 2607:f348:3580::/44
  • 2607:f348:3590::/46
  • 2607:f348:3594::/48
  • 2607:f348:3596::/47
  • 2607:f348:3598::/45
  • 2607:f348:35a0::/43
  • 2607:f348:35c0::/42
  • 2607:f348:3600::/39
  • 2607:f348:3800::/37
  • 2607:f348:4000::/34
  • 2607:f348:8000::/33

Other ASNs named zColo

5 other networks use the same organisation name; together with AS13354 they announce 99,328 IPv4 addresses.

ASNNameIPv4 addresses
AS27325DATABANK-ZCOLO - zColo US35,072
AS32952ZC38-AS2 - zColo US4,864
AS14313DATABANK-ZCOLO - zColo US3,584
AS3595DATABANK-ZCOLO - zColo US3,328
AS16626DATABANK-ZCOLO - zColo USIPv6 only

Similar-sized networks in United States

ASNNameIPv4 addresses
AS14155#1466 RURAL-TELEPHONE-SVCCO - Rural Telephone Service Co, Inc.52,736
AS36374#1467 STELLAR-ASSOCIATION - Stellar Association, LLC52,736
AS393559#1468 WEBBING-USA - WEBBING USA, INC.52,736
AS398535#1470 ESUHSD-ASN-1 - EAST SIDE UNION HIGH SCHOOL DIST52,480
AS14103#1471 ACDNET-ASN1 - ACD.net52,224
AS33566#1472 KUB-FIBER-01 - Knoxville Utilities Board52,224

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