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CIDR Range

38.31.200.0/21

2.0K IPs /21 CtrlS AS18229 India ARIN
Addresses
2,048
2.0K
Sub-ranges
0+
within this block
PTR Density
0.0%
0 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.

75/100
Moderate
How this score is built

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

Geolocation

First and last addresses in 38.31.200.0/21

38.31.200.0/21 runs from 38.31.200.0 to 38.31.207.255.

First 16
Last 16

Not announced as an exact prefix — covered by the announced supernet 38.0.0.0/8.

Announced prefix
Origin AS
Announcement samples
17,712
Last seen
2026-11-13 15:51:11

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 38.31.200.0/21?

38.31.200.0/21 is a CIDR network block containing 2,048 IPv4 addresses (from 38.31.200.0 to 38.31.207.255). CIDR notation combines an IP address with a prefix length to define a range of addresses.

Who owns the 38.31.200.0/21 network?

The 38.31.200.0/21 range is allocated to CtrlS and announced via AS18229 from India.

Last updated: 2026-11-13 16:09:05 UTC
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