Reputation · trust score
A transparent 0–100 signal. Every entity starts at a neutral baseline of 65; threat-intel blocklists, exposure, reverse-DNS, routing and allocation each adjust it up or down. Higher is more trustworthy.
- Baseline (neutral) 65
- Isp allocation +5
- Trust score 70 / 100
Experimental · trust-vectors model v1.1.0 — a transparent heuristic, not a definitive verdict. How it works →
Network profile
Source: PeeringDB →Present at 1 internet exchange: JPNAP Tokyo: Peering
AS131918 — global IP footprint
Cities where AS131918 has measurable IPv4 allocation. Click any dot to open that city's page. Size and color scale with IP count.
Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 133.247.0.0/18 | 16.4K |
91.9%
|
SHONAN CABLE NETWORK | JP | Kanagawa | Hiratsuka |
| 163.131.192.0/18 | 16.4K |
96.4%
|
SHONAN CABLE NETWORK | JP | Kanagawa | Nakazato |
| 110.74.80.0/20 | 4.1K |
92.7%
|
SHONAN CABLE NETWORK | JP | Kanagawa | Hiratsuka |
| 110.74.96.0/20 | 4.1K |
94.7%
|
SHONAN CABLE NETWORK | JP | Kanagawa | Hiratsuka |
| 133.32.80.0/20 | 4.1K |
98.1%
|
SHONAN CABLE NETWORK | JP | Kanagawa | Ōiso |
| 220.215.48.0/20 | 4.1K |
99.1%
|
SHONAN CABLE NETWORK | JP | Kanagawa | Hiratsuka |
| 220.215.80.0/20 | 4.1K |
97.8%
|
SHONAN CABLE NETWORK | JP | Kanagawa | Hiratsuka |
| 133.32.72.0/21 | 2.0K |
98.3%
|
SHONAN CABLE NETWORK | JP | Kanagawa | Ōiso |
| 133.247.64.0/21 | 2.0K |
98.1%
|
SHONAN CABLE NETWORK | JP | Kanagawa | Hiratsuka |
| 202.247.176.0/21 | 2.0K |
95.0%
|
SHONAN CABLE NETWORK | JP | Kanagawa | Hiratsuka |
| 103.93.60.0/22 | 1.0K |
90.1%
|
SHONAN CABLE NETWORK | JP | — | — |
| 219.100.236.0/22 | 1.0K |
95.1%
|
SHONAN CABLE NETWORK | JP | Kanagawa | Hiratsuka |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS131918 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.
| Prefix | Announcement samples | Last seen |
|---|---|---|
| 163.131.192.0/18 | 3,802 | 2026-07-22 00:44:04 |
| 202.247.176.0/21 | 3,783 | 2026-07-22 00:44:04 |
| 133.32.72.0/21 | 3,757 | 2026-07-22 00:44:05 |
| 220.215.80.0/20 | 3,746 | 2026-07-22 00:44:04 |
| 220.215.48.0/20 | 3,745 | 2026-07-22 00:44:04 |
| 133.247.0.0/18 | 3,735 | 2026-07-22 00:44:04 |
| 133.32.80.0/20 | 3,731 | 2026-07-22 00:44:05 |
| 133.247.64.0/21 | 3,725 | 2026-07-22 00:44:05 |
| 110.74.96.0/20 | 3,719 | 2026-07-22 00:44:04 |
| 103.93.60.0/22 | 3,710 | 2026-07-22 00:44:04 |
| 110.74.80.0/20 | 3,706 | 2026-07-22 00:44:04 |
| 219.100.236.0/22 | 3,690 | 2026-07-22 00:44:04 |
Frequently Asked Questions
What is AS131918?
AS131918 is an Autonomous System Number assigned to SHONAN CABLE NETWORK. An ASN identifies a network that controls a specific set of IP addresses and determines how traffic is routed across the internet via BGP (Border Gateway Protocol).
How many IP addresses does AS131918 announce?
AS131918 announces 61.4K IPv4 addresses distributed across 12 routed CIDR prefixes. The network is registered in Japan.
Who operates AS131918?
AS131918 is operated by SHONAN CABLE NETWORK. The organization is based in Japan. You can view all IP ranges and related ASNs on the organization page.
What country is AS131918 registered in?
AS131918 is registered in Japan. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
