asn.dev

Address space

AS3356 LEVEL3

Transit ARIN

IPv4 prefixes 4,699 27.37M addresses
IPv6 prefixes 306
Most common size /24 IPv4
Flagged 104

Shape

IPv4 prefix sizes

All IPv4
/11
/11: 2
2
/12
/12: 3
3
/13
/13: 7
7
/14
/14: 9
9
/15
/15: 15
15
/16
/16: 30
30
/17
/17: 59
59
/18
/18: 120
120
/19
/19: 224
224
/20
/20: 391
391
/21
/21: 532
532
/22
/22: 743
743
/23
/23: 966
966
/24
/24: 1,494
1,494
/25
/25: 16
16
/26
/26: 21
21
/27
/27: 27
27
/28
/28: 20
20
/29
/29: 20
20

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
/29
/29: 1
1
/32
/32: 5
5
/33
/33: 2
2
/34
/34: 8
8
/35
/35: 10
10
/36
/36: 9
9
/37
/37: 15
15
/38
/38: 14
14
/39
/39: 15
15
/40
/40: 16
16
/41
/41: 19
19
/42
/42: 18
18
/43
/43: 20
20
/44
/44: 20
20
/45
/45: 19
19
/46
/46: 29
29
/47
/47: 38
38
/48
/48: 48
48

Geography

Where the space lands

CountryNamePrefixes
USUnited States of America5,005

Review

Flagged prefixes

104 of 5,005
PrefixFamilyAddressesCountryFlags
4.31.236.0/26IPv464USToo specific
4.31.236.72/29IPv48USToo specific
4.31.236.80/28IPv416USToo specific
4.31.236.96/27IPv432USToo specific
4.31.236.128/25IPv4128USToo specific
8.13.224.160/27IPv432USToo specific
8.13.225.32/27IPv432USToo specific
8.13.225.64/26IPv464USToo specific
8.13.225.128/25IPv4128USToo specific
8.13.226.160/27IPv432USToo specific
8.13.227.96/27IPv432USToo specific
8.13.227.128/26IPv464USToo specific
8.13.227.192/28IPv416USToo specific
8.13.228.96/27IPv432USToo specific
8.13.228.224/27IPv432USToo specific
8.13.230.128/27IPv432USToo specific
8.13.231.192/27IPv432USToo specific
8.13.232.160/27IPv432USToo specific
8.13.233.64/26IPv464USToo specific
8.13.233.128/25IPv4128USToo specific
8.13.234.224/27IPv432USToo specific
8.44.88.0/25IPv4128USToo specific
8.44.88.128/26IPv464USToo specific
8.44.88.200/29IPv48USToo specific
8.44.88.208/28IPv416USToo 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.