asn.dev

Address space

AS278 Universidad Nacional Autonoma de Mexico

Unclassified ARIN

IPv4 prefixes 295 132K addresses
IPv6 prefixes 78
Most common size /24 IPv4
Flagged 122

Shape

IPv4 prefix sizes

All IPv4
/20
/20: 3
3
/21
/21: 19
19
/22
/22: 37
37
/23
/23: 52
52
/24
/24: 62
62
/28
/28: 6
6
/29
/29: 38
38
/30
/30: 20
20
/31
/31: 58
58

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
/33
/33: 1
1
/35
/35: 1
1
/36
/36: 3
3
/37
/37: 3
3
/38
/38: 3
3
/39
/39: 3
3
/40
/40: 3
3
/41
/41: 2
2
/42
/42: 2
2
/43
/43: 6
6
/44
/44: 4
4
/45
/45: 6
6
/46
/46: 10
10
/47
/47: 15
15
/48
/48: 16
16

Geography

Where the space lands

CountryNamePrefixes
MXMexico373

Review

Flagged prefixes

122 of 373
PrefixFamilyAddressesCountryFlags
187.164.14.56/30IPv44MXToo specific
187.164.14.64/29IPv48MXToo specific
189.202.130.126/31IPv42MXToo specific
189.202.130.128/31IPv42MXToo specific
189.202.130.132/30IPv44MXToo specific
189.202.141.184/29IPv48MXToo specific
189.202.144.248/29IPv48MXToo specific
189.202.149.248/29IPv48MXToo specific
189.202.151.0/30IPv44MXToo specific
189.202.151.72/29IPv48MXToo specific
189.202.152.4/30IPv44MXToo specific
189.202.152.10/31IPv42MXToo specific
189.202.152.12/31IPv42MXToo specific
189.202.152.16/30IPv44MXToo specific
189.202.152.28/31IPv42MXToo specific
189.202.152.94/31IPv42MXToo specific
189.202.152.96/31IPv42MXToo specific
189.202.152.100/31IPv42MXToo specific
189.202.152.108/31IPv42MXToo specific
189.202.152.112/30IPv44MXToo specific
189.202.152.118/31IPv42MXToo specific
189.202.152.120/30IPv44MXToo specific
189.202.152.124/31IPv42MXToo specific
189.202.152.132/31IPv42MXToo specific
189.202.152.136/31IPv42MXToo 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.