Addresses
2,048
2.0K
Sub-ranges
12+
within this block
PTR Density
0.2%
4 of 2.0K 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.
81/100
Trusted
How this score is built
- Baseline (neutral) 65
- Long-established allocation (18y) +6
- Has a reverse-DNS (PTR) record +5
- Isp allocation +5
- Trust score 81 / 100
Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →
Ranges inside 113.106.72.0/21
| CIDR | IPs | Organization | ASN | Country |
|---|---|---|---|---|
| 113.106.76.0/22 | 1.0K | Chinanet | AS4134 | CN |
| 113.106.72.0/23 | 512 | Chinanet | AS4134 | CN |
| 113.106.74.0/24 | 256 | Chinanet | AS4134 | CN |
| 113.106.75.0/25 | 128 | Chinanet | AS4134 | CN |
| 113.106.75.192/26 | 64 | Chinanet | AS4134 | CN |
| 113.106.75.160/27 | 32 | Chinanet | AS4134 | CN |
| 113.106.75.128/28 | 16 | Chinanet | AS4134 | CN |
| 113.106.75.144/29 | 8 | Chinanet | AS4134 | CN |
| 113.106.75.156/30 | 4 | Chinanet | AS4134 | CN |
| 113.106.75.154/31 | 2 | Chinanet | AS4134 | CN |
| 113.106.75.152/32 | 1 | Chinanet | AS4134 | CN |
| 113.106.75.153/32 | 1 | Chinanet | AS4134 | CN |
First 256 of 2,048 IP addresses in 113.106.72.0/21
113.106.72.0
113.106.72.1
113.106.72.2
113.106.72.3
113.106.72.4
113.106.72.5
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113.106.72.253
113.106.72.254
113.106.72.255
+ 1.8K more (range too large to list inline)
BGP Routing
Live BGP anomalies →This block is announced in BGP, observed across our RIPE RIS collectors.
Announced prefix
Origin AS
Announcement samples
46
Last seen
2026-07-24 02:24:24
RIR Ownership History
Atom feed ⇲Allocation changes captured weekly from regional internet registry (RIR) delegation files.
| Date | Event | From | To |
|---|---|---|---|
| 2026-05-10 | New Allocation | — | CN |
Frequently Asked Questions
What is 113.106.72.0/21?
113.106.72.0/21 is a CIDR network block containing 2,048 IPv4 addresses (from 113.106.72.0 to 113.106.79.255). CIDR notation combines an IP address with a prefix length to define a range of addresses.
Who owns the 113.106.72.0/21 network?
The 113.106.72.0/21 range is allocated to Chinanet and announced via AS4134 from China.
Last updated: 2026-07-24 05:55:33 UTC
