asn.dev

Address space

AS22616 ZSCALER-SJC1

Business ARIN

IPv4 prefixes 443 488K addresses
IPv6 prefixes 24
Most common size /23 IPv4
Flagged 120

Shape

IPv4 prefix sizes

All IPv4
/15
/15: 1
1
/16
/16: 1
1
/18
/18: 1
1
/19
/19: 1
1
/20
/20: 10
10
/21
/21: 40
40
/22
/22: 55
55
/23
/23: 120
120
/24
/24: 94
94
/25
/25: 6
6
/26
/26: 7
7
/27
/27: 10
10
/28
/28: 13
13
/29
/29: 18
18
/30
/30: 22
22
/31
/31: 28
28
/32
/32: 16
16

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
/37
/37: 1
1
/38
/38: 3
3
/39
/39: 6
6
/40
/40: 7
7
/47
/47: 2
2
/48
/48: 5
5

Geography

Where the space lands

CountryNamePrefixes
USUnited States of America467

Review

Flagged prefixes

120 of 467
PrefixFamilyAddressesCountryFlags
136.226.70.0/28IPv416USToo specific
136.226.70.16/29IPv48USToo specific
136.226.70.24/32IPv41USToo specific
136.226.70.25/32IPv41USToo specific
136.226.70.26/31IPv42USToo specific
136.226.70.28/30IPv44USToo specific
136.226.70.32/27IPv432USToo specific
136.226.70.64/30IPv44USToo specific
136.226.70.68/31IPv42USToo specific
136.226.70.70/31IPv42USToo specific
136.226.70.72/29IPv48USToo specific
136.226.70.80/28IPv416USToo specific
136.226.70.96/27IPv432USToo specific
136.226.70.128/30IPv44USToo specific
136.226.70.132/31IPv42USToo specific
136.226.70.134/31IPv42USToo specific
136.226.70.136/29IPv48USToo specific
136.226.70.144/28IPv416USToo specific
136.226.70.160/27IPv432USToo specific
136.226.70.192/30IPv44USToo specific
136.226.70.196/31IPv42USToo specific
136.226.70.198/31IPv42USToo specific
136.226.70.200/29IPv48USToo specific
136.226.70.208/28IPv416USToo specific
136.226.70.224/27IPv432USToo specific

The first 25. Every flag also shows in the IPv4 and IPv6 lists.

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