asn.dev

Address space

AS56301 MN-NDC-MN National Data Center building

Unclassified ARIN

IPv4 prefixes 17 3.58K addresses
IPv6 prefixes 1
Most common size /24 IPv4
Flagged 8

Shape

IPv4 prefix sizes

All IPv4
/23
/23: 4
4
/24
/24: 5
5
/25
/25: 1
1
/26
/26: 1
1
/27
/27: 1
1
/28
/28: 1
1
/29
/29: 1
1
/30
/30: 1
1
/31
/31: 1
1
/32
/32: 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

Geography

Where the space lands

CountryNamePrefixes
MNMongolia18

Review

Flagged prefixes

8 of 18
PrefixFamilyAddressesCountryFlags
203.26.189.0/25IPv4128MNToo specific
203.26.189.128/28IPv416MNToo specific
203.26.189.144/29IPv48MNToo specific
203.26.189.152/30IPv44MNToo specific
203.26.189.156/31IPv42MNToo specific
203.26.189.159/32IPv41MNToo specific
203.26.189.160/27IPv432MNToo specific
203.26.189.192/26IPv464MNToo specific

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