asn.dev

Address space

AS33660 CMCS - Comcast Cable Communications, LLC

Unclassified ARIN Cable/DSL/ISP

IPv4 prefixes 96 622K addresses
IPv6 prefixes 54
Most common size /20 IPv4
Flagged 0

Shape

IPv4 prefix sizes

All IPv4
/16
/16: 1
1
/17
/17: 7
7
/18
/18: 8
8
/19
/19: 7
7
/20
/20: 25
25
/21
/21: 7
7
/22
/22: 11
11
/23
/23: 11
11
/24
/24: 19
19

A wall of /24s usually means many small customer assignments or fine-grained traffic engineering; a few short prefixes means large contiguous allocations announced whole.

Shape

IPv6 prefix sizes

All IPv6
/26
/26: 2
2
/32
/32: 2
2
/44
/44: 1
1
/47
/47: 5
5
/48
/48: 44
44

Geography

Where the space lands

CountryNamePrefixes
USUnited States of America150