Addresses
512
512
Sub-ranges
3+
within this block
PTR Density
3.7%
19 of 512 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.
70/100
Moderate
How this score is built
- Baseline (neutral) 65
- Has a reverse-DNS (PTR) record +5
- Trust score 70 / 100
Experimental · trust-vectors model v1.3.0 — a transparent heuristic, not a definitive verdict. How it works →
Ranges inside 103.137.156.0/23
| CIDR | IPs | Organization | ASN | Country |
|---|---|---|---|---|
| 103.137.156.0/24 | 256 | Vietnam News Agency | AS23999 | VN |
| 103.137.156.0/24 | 256 | Vietnam News Agency | AS23999 | VN |
| 103.137.157.0/24 | 256 | — | — | VN |
Geolocation
First and last addresses in 103.137.156.0/23
103.137.156.0/23 runs from 103.137.156.0 to 103.137.157.255.
First 16
103.137.156.0
103.137.156.1
103.137.156.2
103.137.156.3
103.137.156.4
103.137.156.5
103.137.156.6
103.137.156.7
103.137.156.8
103.137.156.9
103.137.156.10
103.137.156.11
103.137.156.12
103.137.156.13
103.137.156.14
103.137.156.15
Last 16
Frequently Asked Questions
What is 103.137.156.0/23?
103.137.156.0/23 is a CIDR network block containing 512 IPv4 addresses (from 103.137.156.0 to 103.137.157.255). CIDR notation combines an IP address with a prefix length to define a range of addresses.
Who owns the 103.137.156.0/23 network?
The 103.137.156.0/23 range is allocated to an unknown organization from Vietnam.
Last updated: 2026-11-13 12:24:05 UTC
