$ query “AS12129” --type=asn → 1 result(s)

AS12129 — 123NET

123.Net Inc.

AS12129 is a major transit provider run by 123.Net Inc., established in the United States in 1999. The network announces a solid 168 704 IPv4 addresses. Supports IPv6.

  • Top 5% — Top 5% of all autonomous systems by reach and degree
  • Pioneer — Registered before the year 2000

Basic Information

Country
🇺🇸 United States
Category
Internet Service Provider
Network Role
Major Transit
Data Origin
Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
Registered
March 30, 1999
Last Changed
March 04, 2026
Last Seen
March 04, 2026

Prefix Summary

IPv4 Prefixes (raw / aggregated)
54 / 40
IPv6 Prefixes (raw / aggregated)
6 / 5
IPv4 Addresses
168 704
Largest IPv4 Prefix
/17 (32 768 addresses)
Largest IPv6 Prefix
/32
Geolocated Countries
🇺🇸 US (45 IPs), 🇦🇪 AE (1 IPs), 🇩🇪 DE (1 IPs)
Prefix Changed
March 04, 2026

Reputation

Reputation
Pristine — 0 flagged IPs out of 168 704 total (0.00%)

Connectivity Summary

Upstream Providers
9 upstream autonomous systems providing transit
Peers
16 autonomous systems exchanging traffic without transit fees
Downstream Customers
88 downstream autonomous systems buying transit
Degree
115 unique BGP neighbors (providers + customers + peers)
Reach
140 — customer cone size measuring network influence
Degree Rank
#1 295
Reach Rank
#925

Upstream Providers (9)

  • AS6939 — HURRICANE
  • AS174 — COGENT-174 (Tier-1 transit)
  • AS3356 — LEVEL3 (Tier-1 transit)
  • AS6461 — ZAYO-6461 (Tier-1 transit)
  • AS1299 — TWELVE99 (Tier-1 transit)
  • AS3257 — GTT-BACKBONE (Tier-1 transit)
  • AS2914 — NTT-DATA-2914 (Tier-1 transit)
  • AS6453 — AS6453 (Tier-1 transit)
  • AS396998 — PATH-NETWORK

Prefix Lists

IPv4 Prefixes (54 total)

  • 152.160.0.0/17 (32 768 addresses)
  • 152.160.128.0/18 (16 384 addresses)
  • 207.91.192.0/18 (16 384 addresses)
  • 65.183.160.0/19 (8 192 addresses)
  • 66.103.224.0/19 (8 192 addresses)
  • 69.39.64.0/19 (8 192 addresses)
  • 74.126.0.0/19 (8 192 addresses)
  • 209.124.32.0/19 (8 192 addresses)
  • 209.131.0.0/19 (8 192 addresses)
  • 216.234.96.0/19 (8 192 addresses)
  • 66.51.144.0/20 (4 096 addresses)
  • 67.214.112.0/20 (4 096 addresses)
  • 192.96.208.0/20 (4 096 addresses)
  • 204.232.80.0/20 (4 096 addresses)
  • 205.251.176.0/20 (4 096 addresses)
  • 209.103.128.0/20 (4 096 addresses)
  • 216.109.192.0/20 (4 096 addresses)
  • 216.150.224.0/20 (4 096 addresses)
  • 199.249.0.0/21 (2 048 addresses)
  • 66.54.96.0/22 (1 024 addresses)
  • 130.44.28.0/22 (1 024 addresses)
  • 130.51.212.0/22 (1 024 addresses)
  • 198.3.44.0/22 (1 024 addresses)
  • 199.167.252.0/22 (1 024 addresses)
  • 199.231.52.0/22 (1 024 addresses)
  • 69.54.68.0/23 (512 addresses)
  • 181.214.238.0/23 (512 addresses)
  • 192.159.68.0/23 (512 addresses)
  • 199.33.234.0/23 (512 addresses)
  • 37.221.109.0/24 (256 addresses)
  • 69.87.152.0/24 (256 addresses)
  • 147.189.140.0/24 (256 addresses)
  • 149.19.205.0/24 (256 addresses)
  • 176.111.221.0/24 (256 addresses)
  • 192.149.240.0/24 (256 addresses)
  • 192.153.192.0/24 (256 addresses)
  • 198.153.129.0/24 (256 addresses)
  • 204.106.17.0/24 (256 addresses)
  • 206.168.80.0/24 (256 addresses)
  • 208.86.112.0/24 (256 addresses)

IPv6 Prefixes (6 total)

  • 2607:f790::/32
  • 2606:6680:29::/48
  • 2606:6680:30::/48
  • 2620:84:c000::/48
  • 2620:11f:7008::/48