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AS4673 NTT DATA CORPORATION

INTERVIA - NTT DATA CORPORATION · registered in Japan

IPv4 addresses241,66453 prefixes · 0.008% of announced IPv4
Rank in Japan#40largest network in JP by IPv4 space, of 724 · 0.15% of JP
Rank worldwide#948of 79,396 networks with IPv4
IPv61 x /32 (65,536 x /48)16 prefixes
CountryJapan745 ASNs registered there
Open AS4673 in ASN lookup Look up an IP in this network (163.135.0.1) All networks in Japan

IPv4 prefixes

All 53 prefixes, in address order.

  • 163.135.0.0/16
  • 202.217.0.0/18
  • 202.217.64.0/21
  • 202.217.72.0/22
  • 202.217.76.0/22
  • 202.217.80.0/20
  • 202.217.96.0/19
  • 202.235.64.0/19
  • 202.235.96.0/20
  • 203.182.0.0/20
  • 203.182.16.0/23
  • 203.182.18.0/23
  • 203.182.20.0/22
  • 203.182.24.0/21
  • 203.182.32.0/19
  • 203.182.64.0/18
  • 203.182.128.0/18
  • 203.182.192.0/19
  • 203.182.224.0/21
  • 203.182.232.0/23
  • 203.182.234.0/24
  • 203.182.235.0/24
  • 203.182.236.0/22
  • 203.182.240.0/21
  • 203.182.248.0/21
  • 210.144.0.0/21
  • 210.144.8.0/22
  • 210.144.12.0/22
  • 210.144.16.0/22
  • 210.144.20.0/23
  • 210.144.22.0/23
  • 210.144.24.0/21
  • 210.144.32.0/19
  • 210.144.64.0/24
  • 210.144.65.0/24
  • 210.144.66.0/23
  • 210.144.68.0/22
  • 210.144.72.0/23
  • 210.144.74.0/23
  • 210.144.76.0/22
  • 210.144.80.0/22
  • 210.144.84.0/24
  • 210.144.85.0/24
  • 210.144.86.0/23
  • 210.144.88.0/22
  • 210.144.92.0/23
  • 210.144.94.0/23
  • 210.144.96.0/21
  • 210.144.104.0/22
  • 210.144.108.0/23
  • 210.144.110.0/23
  • 210.144.112.0/20
  • 210.144.128.0/17

IPv6 prefixes

All 16 prefixes.

  • 2001:c80::/41
  • 2001:c80:80::/46
  • 2001:c80:84::/46
  • 2001:c80:88::/45
  • 2001:c80:90::/44
  • 2001:c80:a0::/43
  • 2001:c80:c0::/42
  • 2001:c80:100::/40
  • 2001:c80:200::/39
  • 2001:c80:400::/38
  • 2001:c80:800::/37
  • 2001:c80:1000::/36
  • 2001:c80:2000::/35
  • 2001:c80:4000::/34
  • 2001:c80:8000::/34
  • 2001:c80:c000::/34

Similar-sized networks in Japan

ASNNameIPv4 addresses
AS9597#37 CPI-NET - KDDI Web Communications Inc.276,736
AS7506#38 GMO-I-R1 - GMO Internet, Inc.252,672
AS9351#39 ZLAN - ZTV CO.,LTD249,856
AS2522#41 PPP-EXP - Japan Network Information Center229,120
AS2506#42 SuperCSI - NTT business Solutions corporation214,272
AS7687#43 D-CRUISENET - TOYOTA SYSTEMS CORPORATION200,960

IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources