asn.dev

Address space

AS1221 ASN-TELSTRA Telstra Limited

Mobile APNIC

IPv4 prefixes 240 13.39M addresses
IPv6 prefixes 2
Most common size /24 IPv4
Flagged 0

Shape

IPv4 prefix sizes

All IPv4
/11
/11: 1
1
/12
/12: 4
4
/13
/13: 6
6
/14
/14: 6
6
/15
/15: 5
5
/16
/16: 20
20
/17
/17: 4
4
/18
/18: 5
5
/19
/19: 11
11
/20
/20: 9
9
/21
/21: 5
5
/22
/22: 15
15
/23
/23: 29
29
/24
/24: 120
120

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
/20
/20: 1
1
/48
/48: 1
1

Geography

Where the space lands

CountryNamePrefixes
AUAustralia242