Skip to main content
WorldIP.io
CIDR Range

128.1.34.0/23

Addresses
512
512
Sub-ranges
6+
within this block
PTR Density
2.3%
12 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.

77/100
Moderate
How this score is built

Experimental · trust-vectors model v1.3.0 — a transparent heuristic, not a definitive verdict. How it works →

Ranges inside 128.1.34.0/23

First and last addresses in 128.1.34.0/23

128.1.34.0/23 runs from 128.1.34.0 to 128.1.35.255.

First 16
Last 16

Not announced as an exact prefix — covered by the announced supernet 128.1.0.0/16.

Announced prefix
Origin AS
Announcement samples
24,677
Last seen
2026-10-27 11:07:17

RIR Ownership History

Atom feed ⇲

Allocation changes captured from regional internet registry (RIR) delegation files, re-imported every six hours.

Date Event From To
2026-05-10 New Allocation — US

Frequently Asked Questions

What is 128.1.34.0/23?

128.1.34.0/23 is a CIDR network block containing 512 IPv4 addresses (from 128.1.34.0 to 128.1.35.255). CIDR notation combines an IP address with a prefix length to define a range of addresses.

Who owns the 128.1.34.0/23 network?

The 128.1.34.0/23 range is allocated to Zenlayer Inc and announced via AS21859 from United States.

Last updated: 2026-10-27 11:39:05 UTC
Share