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AS33132 Crown Castle Fiber LLC

CROWNCASTLE-AS33132 - Crown Castle Fiber LLC · registered in the United States

IPv4 addresses130,04899 prefixes · 0.004% of announced IPv4
Rank in United States#554largest network in US by IPv4 space, of 18,338 · <0.01% of US
Rank worldwide#1,627of 79,396 networks with IPv4
IPv61 x /32 (65,793 x /48)38 prefixes
CountryUnited States18,679 ASNs registered there
Open AS33132 in ASN lookup Look up an IP in this network (45.42.56.1) All networks in United States

IPv4 prefixes

All 99 prefixes, in address order.

  • 45.42.56.0/21
  • 45.73.144.0/24
  • 45.73.146.0/23
  • 45.73.148.0/22
  • 45.73.152.0/21
  • 69.80.64.0/20
  • 74.115.232.0/22
  • 74.120.40.0/22
  • 74.120.44.0/23
  • 74.120.46.0/24
  • 74.120.47.0/24
  • 104.219.176.0/21
  • 140.82.213.0/24
  • 141.193.54.0/24
  • 162.213.144.0/21
  • 162.246.136.0/21
  • 162.252.120.0/21
  • 167.93.0.0/17
  • 170.55.0.0/20
  • 170.55.16.0/21
  • 170.55.24.0/22
  • 170.55.28.0/24
  • 170.55.30.0/23
  • 170.55.32.0/20
  • 170.55.48.0/22
  • 170.55.52.0/23
  • 170.55.54.0/23
  • 170.55.56.0/21
  • 170.55.64.0/21
  • 170.55.72.0/22
  • 170.55.76.0/23
  • 170.55.78.0/23
  • 170.55.80.0/22
  • 170.55.84.0/22
  • 170.55.88.0/24
  • 170.55.89.0/24
  • 170.55.90.0/24
  • 170.55.91.0/24
  • 170.55.92.0/22
  • 170.55.96.0/22
  • 170.55.100.0/23
  • 170.55.102.0/24
  • 170.55.103.0/24
  • 170.55.104.0/21
  • 170.55.112.0/23
  • 170.55.114.0/24
  • 170.55.116.0/22
  • 170.55.120.0/24
  • 170.55.121.0/24
  • 170.55.122.0/23
  • 170.55.124.0/22
  • 170.55.128.0/23
  • 170.55.130.0/23
  • 170.55.132.0/24
  • 170.55.133.0/24
  • 170.55.134.0/23
  • 170.55.136.0/21
  • 170.55.144.0/22
  • 170.55.148.0/23
  • 170.55.150.0/24
  • 170.55.151.0/24
  • 170.55.152.0/21
  • 170.55.160.0/23
  • 170.55.162.0/24
  • 170.55.163.0/24
  • 170.55.164.0/24
  • 170.55.166.0/23
  • 170.55.168.0/23
  • 170.55.170.0/24
  • 170.55.172.0/22
  • 170.55.176.0/21
  • 170.55.184.0/22
  • 170.55.188.0/24
  • 170.55.189.0/24
  • 170.55.190.0/23
  • 170.55.192.0/24
  • 170.55.193.0/24
  • 170.55.194.0/23
  • 170.55.197.0/24
  • 170.55.198.0/23
  • 170.55.200.0/21
  • 170.55.208.0/20
  • 170.55.224.0/19
  • 198.72.45.0/24
  • 198.72.46.0/23
  • 198.181.255.0/24
  • 199.26.73.0/24
  • 199.26.74.0/24
  • 199.26.76.0/22
  • 199.27.240.0/24
  • 199.27.243.0/24
  • 199.27.244.0/22
  • 199.167.100.0/24
  • 199.167.102.0/23
  • 199.189.192.0/21
  • 204.28.104.0/21
  • 204.88.28.0/22
  • 204.238.236.0/24
  • 208.67.164.0/22

IPv6 prefixes

All 38 prefixes.

  • 2602:80f:b000::/40
  • 2604:200::/46
  • 2604:200:4::/48
  • 2604:200:5::/48
  • 2604:200:6::/48
  • 2604:200:7::/48
  • 2604:200:8::/45
  • 2604:200:10::/47
  • 2604:200:12::/47
  • 2604:200:14::/46
  • 2604:200:18::/46
  • 2604:200:1c::/47
  • 2604:200:1e::/48
  • 2604:200:20::/43
  • 2604:200:40::/42
  • 2604:200:80::/41
  • 2604:200:100::/40
  • 2604:200:200::/39
  • 2604:200:400::/38
  • 2604:200:800::/37
  • 2604:200:1000::/38
  • 2604:200:1400::/40
  • 2604:200:1501::/48
  • 2604:200:1502::/47
  • 2604:200:1504::/46
  • 2604:200:1508::/45
  • 2604:200:1510::/44
  • 2604:200:1520::/43
  • 2604:200:1540::/42
  • 2604:200:1580::/41
  • 2604:200:1600::/39
  • 2604:200:1800::/37
  • 2604:200:2000::/35
  • 2604:200:4000::/34
  • 2604:200:8000::/33
  • 2604:1a00:59::/48
  • 2604:1a00:5d::/48
  • 2604:1a00:cc::/48

Other ASNs named Crown Castle Fiber LLC

11 other networks use the same organisation name; together with AS33132 they announce 960,512 IPv4 addresses.

ASNNameIPv4 addresses
AS46887CROWNCASTLE-AS46887 - Crown Castle Fiber LLC US813,312
AS33313AS33313 - Crown Castle Fiber LLC US6,912
AS27506CROWNCASTLE-AS27506 - Crown Castle Fiber LLC US5,120
AS23329AS23329 - Crown Castle Fiber LLC US1,536
AS30372AS30372 - Crown Castle Fiber LLC US1,536
AS16657CROWNCASTLE-AS16657 - Crown Castle Fiber LLC US768
AS394647AS394647 - Crown Castle Fiber LLC US512
AS11074CROWNCASTLE-AS11074 - Crown Castle Fiber LLC US256
AS13592CROWNCASTLE-AS13592 - Crown Castle Fiber LLC US256
AS63441AS63441 - Crown Castle Fiber LLC US256
AS21687AS21687 - Crown Castle Fiber LLC USIPv6 only

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ASNNameIPv4 addresses
AS11596#551 BESTBUY - Best Buy Co., Inc.130,816
AS20426#552 PWC-AS - PriceWaterhouseCoopers, LLP130,816
AS39855#553 MOD-EU Mod Mission Critical LLC130,304
AS13809#555 UAMS-ASN - University of Arkansas for Medical Sciences130,048
AS10370#556 NORTHWEST-AIRLINES - Northwest Airlines129,792
AS399077#557 TERAEXCH - Tcloudnet129,280

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