AS173 — NTTECL-AS Nippon Telegraph and Telephone Corporation

AS173 announces 2 IPv4 prefixes covering 8,704 addresses and 0 IPv6 prefixes.

About this network

An early allocation (NTTECL-AS) belonging to Nippon Telegraph and Telephone Corporation, Japan's incumbent telecommunications carrier.

What it's used for

• Carrier and enterprise networking operated by NTT.

Notable

• One of the few very low AS numbers held outside the United States, reflecting NTT's early connection to the global internet.

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

Announced prefixes

• 163.138.160.0/19
• 192.47.168.0/23

Upstream networks

• AS2518 BIGLOBE Inc.
• AS6939 Hurricane Electric LLC
• AS7521 INTERNET MULTIFEED CO.
• AS20485 Joint Stock Company TransTeleCom
• AS17639 Converge ICT Solutions Inc.
• AS8966 EMIRATES TELECOMMUNICATIONS GROUP COMPANY (ETISALAT GROUP) PJSC
• AS24482 SG.GS

Downstream networks

• AS2511 Nippon Telegraph and Telephone Corporation

Adjacent networks

• AS2518 BIGLOBE Inc.
• AS2511 Nippon Telegraph and Telephone Corporation
• AS6939 Hurricane Electric LLC
• AS7521 INTERNET MULTIFEED CO.
• AS20485 Joint Stock Company TransTeleCom
• AS8966 EMIRATES TELECOMMUNICATIONS GROUP COMPANY (ETISALAT GROUP) PJSC
• AS17639 Converge ICT Solutions Inc.
• AS24482 SG.GS

Internet exchanges

• JPIX Tokyo — Tokyo, Japan