AS3949 — NTTA-3946 - NTT America, Inc.

AS3949 announces 31 IPv4 prefixes covering 11,516 addresses and 12 IPv6 prefixes.

About this network

A customer-facing ASN of NTT America, Inc. (NTTA-3946), the US arm of the Japanese telecom group NTT.

What it's used for

• Announces dozens of small prefixes drawn from NTT's ranges across North America, Europe, and Asia-Pacific — the shape of an ASN used to originate customer and hosted networks rather than to carry backbone transit.
• NTT's global transit network is a separate ASN, AS2914.

Notable

• NTT America traces back to Verio, the US hosting and internet provider NTT acquired in 2000; the company holds a contiguous run of low-numbered ASNs in the 3936–3949 range, of which this is the last.
• Provider address space, so an IP here belongs to NTT or one of its customers, not to a single organisation.

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

Announced prefixes

• 23.27.212.0/23
• 23.27.227.0/24
• 23.27.229.0/24
• 45.149.225.0/24
• 45.149.226.0/24
• 62.73.186.0/24
• 80.96.148.0/23
• 80.174.216.0/21
• 81.93.189.64/29
• 83.231.161.8/29
• 91.123.68.0/23
• 103.13.83.144/28
• 103.13.83.160/29
• 136.0.49.0/24
• 136.0.62.0/24
• 136.0.69.0/24
• 142.111.167.0/24
• 142.111.169.0/24
• 166.88.42.0/23
• 166.88.103.0/24
• 171.22.145.0/24
• 185.243.129.0/24
• 193.28.144.0/24
• 193.28.148.0/24
• 193.39.136.0/24
• 202.68.66.76/30
• 202.68.68.0/26
• 202.68.75.80/28
• 202.68.79.128/25
• 205.132.16.0/21
• 207.71.84.0/22
• 2407:a800:3e11::/51
• 2407:a800:3e11:111b::/64
• 2407:a800:3e11:111c::/62
• 2407:a800:3e11:1120::/59
• 2407:a800:3e11:1140::/58
• 2407:a800:3e11:1180::/57
• 2407:a800:3e11:1200::/55
• 2407:a800:3e11:1400::/54
• 2407:a800:3e11:1800::/53
• 2407:a800:3e11:2000::/51
• 2407:a800:3e11:4000::/50
• 2407:a800:3e11:8000::/49

Upstream networks

• AS2914 NTT America, Inc.

Adjacent networks

• AS2914 NTT America, Inc.

Routing security

• RPKI: 50 valid, 13 invalid and 9 not-found announcements; 697 ROAs.
• ASPA: none published.
• IRR: 63% of announcements registered; 344 route objects.
• Listed in as-sets: AS-HANABI-CLPROTECT, AS-IIJ, AS-IIJ6, AS-VIRTELA-COMM, AS-VIRTELA-COMM, AS2497:AS-IIJ, AS2497:AS-IIJ6, AS2914:AS-ASIA, AS2914:AS-ASIA-V6, AS2914:AS-EUROPE, AS2914:AS-EUROPE-V6, AS2914:AS-GLOBAL, AS2914:AS-GLOBAL-V6, AS2914:AS-OCEANIA, AS2914:AS-OCEANIA-V6, AS2914:AS-SA, AS2914:AS-SA-V6, AS2914:AS-SPAIN, AS2914:AS-US, AS2914:AS-US-V6, AS38561:AS-AU, AS38561:AS-AU.