Addresses
65,536
65.5K
Sub-ranges
24+
within this block
PTR Density
0.0%
0 of 65.5K IPs have PTR
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.
71/100
Moderate
How this score is built
- Baseline (neutral) 65
- Long-established allocation (29y) +6
- Trust score 71 / 100
Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →
Ranges inside 133.157.0.0/16
| CIDR | IPs | Organization | ASN | Country |
|---|---|---|---|---|
| 133.157.128.0/17 | 32.8K | — | — | JP |
| 133.157.128.0/17 | 32.8K | — | — | JP |
| 133.157.64.0/18 | 16.4K | — | — | JP |
| 133.157.0.0/19 | 8.2K | — | — | JP |
| 133.157.32.0/19 | 8.2K | — | — | JP |
| 133.157.32.0/19 | 8.2K | Internet Initiative Japan Inc. | AS2497 | JP |
| 133.157.0.0/19 | 8.2K | — | — | JP |
| 133.157.32.0/19 | 8.2K | Internet Initiative Japan Inc. | AS2497 | JP |
| 133.157.32.0/20 | 4.1K | — | — | JP |
| 133.157.80.0/20 | 4.1K | Internet Initiative Japan Inc. | AS2497 | JP |
| 133.157.80.0/20 | 4.1K | Internet Initiative Japan Inc. | AS2497 | JP |
| 133.157.112.0/20 | 4.1K | — | — | JP |
| 133.157.96.0/21 | 2.0K | Internet Initiative Japan Inc. | AS2497 | JP |
| 133.157.104.0/21 | 2.0K | — | — | JP |
| 133.157.96.0/21 | 2.0K | Internet Initiative Japan Inc. | AS2497 | JP |
| 133.157.72.0/21 | 2.0K | Internet Initiative Japan Inc. | AS2497 | JP |
| 133.157.72.0/21 | 2.0K | Internet Initiative Japan Inc. | AS2497 | JP |
| 133.157.48.0/21 | 2.0K | — | — | JP |
| 133.157.64.0/21 | 2.0K | — | — | JP |
| 133.157.62.0/23 | 512 | — | — | JP |
| 133.157.58.0/23 | 512 | — | — | JP |
| 133.157.56.0/23 | 512 | — | — | JP |
| 133.157.61.0/24 | 256 | — | — | JP |
| 133.157.60.0/24 | 256 | — | — | JP |
Geolocation
First 256 of 65,536 IP addresses in 133.157.0.0/16
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+ 65.3K more (range too large to list inline)
Frequently Asked Questions
What is 133.157.0.0/16?
133.157.0.0/16 is a CIDR network block containing 65,536 IPv4 addresses (from 133.157.0.0 to 133.157.255.255). CIDR notation combines an IP address with a prefix length to define a range of addresses.
Who owns the 133.157.0.0/16 network?
The 133.157.0.0/16 range is allocated to an unknown organization from Japan.
Last updated: 2026-09-11 10:11:08 UTC
