asn.dev

Address space

AS1916 Rede Nacional de Ensino e Pesquisa

Unclassified LACNIC

IPv4 prefixes 286 661K addresses
IPv6 prefixes 47
Most common size /24 IPv4
Flagged 76

Shape

IPv4 prefix sizes

All IPv4
/16
/16: 2
2
/17
/17: 1
1
/18
/18: 8
8
/19
/19: 12
12
/20
/20: 33
33
/21
/21: 26
26
/22
/22: 38
38
/23
/23: 41
41
/24
/24: 49
49
/25
/25: 34
34
/26
/26: 37
37
/27
/27: 5
5

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
/39
/39: 1
1
/40
/40: 2
2
/41
/41: 10
10
/42
/42: 27
27
/43
/43: 1
1
/44
/44: 1
1
/45
/45: 1
1
/46
/46: 1
1
/47
/47: 1
1
/48
/48: 2
2

Geography

Where the space lands

CountryNamePrefixes
BRBrazil333

Review

Flagged prefixes

76 of 333
PrefixFamilyAddressesCountryFlags
186.249.222.128/27IPv432BRToo specific
200.17.2.0/26IPv464BRToo specific
200.17.2.64/26IPv464BRToo specific
200.17.2.128/25IPv4128BRToo specific
200.17.50.0/25IPv4128BRToo specific
200.17.50.128/25IPv4128BRToo specific
200.17.124.0/25IPv4128BRToo specific
200.17.124.128/25IPv4128BRToo specific
200.17.135.0/25IPv4128BRToo specific
200.17.135.128/25IPv4128BRToo specific
200.18.24.128/25IPv4128BRToo specific
200.18.25.128/26IPv464BRToo specific
200.18.146.0/26IPv464BRToo specific
200.18.146.64/26IPv464BRToo specific
200.18.146.128/25IPv4128BRToo specific
200.129.61.0/26IPv464BRToo specific
200.129.61.64/26IPv464BRToo specific
200.129.61.128/25IPv4128BRToo specific
200.129.63.0/26IPv464BRToo specific
200.129.63.64/27IPv432BRToo specific
200.129.63.96/27IPv432BRToo specific
200.129.63.128/25IPv4128BRToo specific
200.129.95.0/25IPv4128BRToo specific
200.129.95.128/26IPv464BRToo specific
200.129.95.192/26IPv464BRToo 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.