asn.dev

Address space

AS237 MERIT-AS-14

Unclassified ARIN

IPv4 prefixes 137 2.21M addresses
IPv6 prefixes 33
Most common size /24 IPv4
Flagged 7

Shape

IPv4 prefix sizes

All IPv4
/14
/14: 1
1
/15
/15: 2
2
/16
/16: 13
13
/17
/17: 10
10
/18
/18: 18
18
/19
/19: 13
13
/20
/20: 12
12
/21
/21: 14
14
/22
/22: 12
12
/23
/23: 16
16
/24
/24: 19
19
/25
/25: 2
2
/26
/26: 1
1
/27
/27: 1
1
/28
/28: 1
1
/29
/29: 1
1
/30
/30: 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
/32
/32: 1
1
/33
/33: 1
1
/35
/35: 2
2
/36
/36: 1
1
/37
/37: 3
3
/38
/38: 3
3
/39
/39: 3
3
/40
/40: 5
5
/41
/41: 1
1
/42
/42: 1
1
/43
/43: 1
1
/44
/44: 2
2
/46
/46: 2
2
/47
/47: 2
2
/48
/48: 5
5

Geography

Where the space lands

CountryNamePrefixes
USUnited States of America170

Review

Flagged prefixes

7 of 170
PrefixFamilyAddressesCountryFlags
198.111.181.128/25IPv4128USToo specific
207.72.112.0/27IPv432USToo specific
207.72.112.32/28IPv416USToo specific
207.72.112.52/30IPv44USToo specific
207.72.112.56/29IPv48USToo specific
207.72.112.64/26IPv464USToo specific
207.72.112.128/25IPv4128USToo specific

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