asn.dev

Address space

AS4713 OCN NTT Communications Corporation

Residential APNIC NSP

IPv4 prefixes 165 28.62M addresses
IPv6 prefixes 21
Most common size /24 IPv4
Flagged 1

Shape

IPv4 prefix sizes

All IPv4
/10
/10: 2
2
/11
/11: 2
2
/12
/12: 5
5
/13
/13: 11
11
/14
/14: 7
7
/15
/15: 8
8
/16
/16: 24
24
/17
/17: 10
10
/18
/18: 7
7
/19
/19: 7
7
/20
/20: 7
7
/21
/21: 8
8
/22
/22: 12
12
/23
/23: 14
14
/24
/24: 41
41

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
/22
/22: 1
1
/32
/32: 1
1
/33
/33: 1
1
/34
/34: 1
1
/35
/35: 1
1
/36
/36: 1
1
/37
/37: 1
1
/38
/38: 1
1
/39
/39: 1
1
/40
/40: 1
1
/41
/41: 1
1
/42
/42: 1
1
/43
/43: 1
1
/44
/44: 1
1
/45
/45: 1
1
/46
/46: 1
1
/47
/47: 1
1
/48
/48: 3
3
/64
/64: 1
1

Geography

Where the space lands

CountryNamePrefixes
JPJapan186

Review

Flagged prefixes

1 of 186
PrefixFamilyAddressesCountryFlags
2407:a800:3e11:111a::/64IPv6/64JPToo specific

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