asn.dev

Address space

AS53767 ICASTCENTER

Hosting ARIN Content

IPv4 prefixes 4 4.61K addresses
IPv6 prefixes 24
Most common size /22 IPv4
Flagged 8

Shape

IPv4 prefix sizes

All IPv4
/21
/21: 1
1
/22
/22: 2
2
/23
/23: 1
1

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
/33
/33: 1
1
/34
/34: 1
1
/35
/35: 1
1
/36
/36: 1
1
/37
/37: 1
1
/38
/38: 1
1
/39
/39: 1
1
/40
/40: 1
1
/41
/41: 1
1
/42
/42: 1
1
/43
/43: 1
1
/44
/44: 1
1
/45
/45: 1
1
/46
/46: 1
1
/47
/47: 1
1
/48
/48: 1
1
/49
/49: 1
1
/50
/50: 1
1
/51
/51: 1
1
/52
/52: 1
1
/53
/53: 1
1
/54
/54: 1
1
/55
/55: 1
1
/56
/56: 1
1

Geography

Where the space lands

CountryNamePrefixes
USUnited States of America28

Review

Flagged prefixes

8 of 28
PrefixFamilyAddressesCountryFlags
2605:9d00::/56IPv6/56USToo specific
2605:9d00:0:200::/55IPv6/55USToo specific
2605:9d00:0:400::/54IPv6/54USToo specific
2605:9d00:0:800::/53IPv6/53USToo specific
2605:9d00:0:1000::/52IPv6/52USToo specific
2605:9d00:0:2000::/51IPv6/51USToo specific
2605:9d00:0:4000::/50IPv6/50USToo specific
2605:9d00:0:8000::/49IPv6/49USToo specific

A flag is an observation, not an accusation. Very large and very specific prefixes are both legitimate in the right context.