AS21687 Crown Castle Fiber LLC

AS21687 - Crown Castle Fiber LLC · registered in the United States

IPv4 addresses00 prefixes · 0.000% of announced IPv4

IPv61,024 x /482 prefixes

CountryUnited States18,679 ASNs registered there

Open AS21687 in ASN lookup Look up an IP in this network (2607:f7a8::1) All networks in United States

IPv6 prefixes

All 2 prefixes.

2607:f7a8::/39
2607:f7a8:1200::/39

Other ASNs named Crown Castle Fiber LLC

11 other networks use the same organisation name; together with AS21687 they announce 960,512 IPv4 addresses.

ASNNameIPv4 addresses

AS46887CROWNCASTLE-AS46887 - Crown Castle Fiber LLC US813,312

AS33132CROWNCASTLE-AS33132 - Crown Castle Fiber LLC US130,048

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

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