AS23639 — ntt-bizlink - NTT Bizlink, Inc.

AS23639 announces 4 IPv4 prefixes covering 6,144 addresses and 1 IPv6 prefixes.

About this network

NTT-BIZLINK is operated by NTT Bizlink, Inc., a subsidiary of the NTT Group.

What it's used for

• The address space carries business connectivity, evidenced by reverse DNS entries such as bbx-biz7010a.nttbiz.com and bbx-biz5020.nttbiz.com.
• The AS announces 6144 IPv4 addresses across 4 prefixes and 1 IPv6 prefix, with only 2 observed neighbours, indicating a role focused on serving specific business customers rather than general transit.

Notable

• All registrants for the announced prefixes are listed as NTT BizLink, Inc., matching the AS holder.
• The address inventory consists of four distinct IPv4 blocks in Japan, all registered under the same netname ntt-bizlink.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 111.90.160.0/21
• 117.20.72.0/21
• 202.8.80.0/22
• 202.74.4.0/22
• 2402:7a00::/32

Upstream networks

• AS2497 Internet Initiative Japan Inc.
• AS10010 TOKAI Communications Corporation

Adjacent networks

• AS2497 Internet Initiative Japan Inc.
• AS10010 TOKAI Communications Corporation

Routing security

• RPKI: 0 valid, 0 invalid and 14 not-found announcements; 0 ROAs.
• ASPA: none published.
• IRR: 29% of announcements registered; 7 route objects.
• Listed in as-sets: AS-17697ARCSTAR, AS-BBX-PEERS, AS-BIZLINK, AS-GIGAINFRA, AS-GIGAINFRA-V6, AS-HURRICANEV6, AS-IIJ, AS-IIJ6, AS-INFOSPHERE, AS-INFOSPHERE-V6, AS-KDD, AS-KDDI6, AS-MESH-CUSTOMER:AS10010, AS-OCN-V6, AS-OCN-V6, AS-TELSTRA-INTL-CUSTOMERS, AS-TELSTRA-INTL-CUSTOMERS-4637, AS-TOKAI, AS-TOKAI6, AS2497:AS-IIJ, AS2497:AS-IIJ6, AS3491:AS-CUSTOMERS-AP.