asn.dev

Address space

AS9824 JTCL-JP-AS JCOM Co., Ltd.

IPv4 prefixes 35 4.75M addresses
IPv6 prefixes 5
Most common size /16 IPv4
Flagged 0

Shape

Prefix sizes

IPv4
/13
/13: 4
4
/14
/14: 4
4
/15
/15: 6
6
/16
/16: 9
9
/17
/17: 3
3
/18
/18: 7
7
/19
/19: 1
1
/21
/21: 1
1

How this network carves its IPv4 space. 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

Prefix sizes

IPv6
/30
/30: 1
1
/31
/31: 1
1
/32
/32: 3
3

Geography

Where the space lands

CountryNamePrefixes
JPJapan40

Inventory

All prefixes

40 total
PrefixFamilyAddressesCountryFlags
27.136.0.0/13IPv4524,288JP
42.144.0.0/13IPv4524,288JP
59.166.0.0/16IPv465,536JP
59.168.0.0/14IPv4262,144JP
60.58.0.0/15IPv4131,072JP
60.60.0.0/15IPv4131,072JP
60.62.0.0/16IPv465,536JP
61.21.0.0/16IPv465,536JP
61.22.0.0/15IPv4131,072JP
61.24.0.0/14IPv4262,144JP
110.128.0.0/13IPv4524,288JP
116.64.0.0/15IPv4131,072JP
116.214.16.0/21IPv42,048JP
116.220.0.0/14IPv4262,144JP
119.168.0.0/16IPv465,536JP
119.169.0.0/17IPv432,768JP
119.169.128.0/18IPv416,384JP
119.169.192.0/18IPv416,384JP
119.170.0.0/15IPv4131,072JP
119.172.0.0/18IPv416,384JP
119.172.64.0/18IPv416,384JP
119.172.128.0/17IPv432,768JP
119.173.0.0/16IPv465,536JP
119.174.0.0/17IPv432,768JP
119.174.128.0/18IPv416,384JP
119.174.192.0/18IPv416,384JP
119.175.0.0/16IPv465,536JP
124.140.0.0/14IPv4262,144JP
124.144.0.0/15IPv4131,072JP
125.8.0.0/13IPv4524,288JP
203.165.0.0/16IPv465,536JP
210.20.0.0/16IPv465,536JP
210.194.0.0/16IPv465,536JP
220.152.0.0/18IPv416,384JP
220.152.64.0/19IPv48,192JP
2001:ff0::/32IPv6—JP
2405:1200::/30IPv6—JP
2405:1204::/31IPv6—JP
2405:1206::/32IPv6—JP
2405:1207::/32IPv6—JP