asn.dev

Address space

AS33287 COMCAST-33287

Unclassified ARIN

IPv4 prefixes 158 1.31M addresses
IPv6 prefixes 291
Most common size /24 IPv4
Flagged 0

Shape

IPv4 prefix sizes

All IPv4
/15
/15: 3
3
/16
/16: 6
6
/17
/17: 2
2
/18
/18: 13
13
/19
/19: 18
18
/20
/20: 11
11
/21
/21: 7
7
/22
/22: 12
12
/23
/23: 25
25
/24
/24: 61
61

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: 21
21
/48
/48: 265
265

Geography

Where the space lands

CountryNamePrefixes
USUnited States of America449