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CIDR Range

217.150.40.0/21

Addresses
2,048
2.0K
Sub-ranges
38+
within this block
PTR Density
77.0%
1.6K 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

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

Ranges inside 217.150.40.0/21

CIDRIPsOrganizationASNCountry
217.150.46.0/23 512 Joint Stock Company TransTeleCom AS20485 RU
217.150.45.0/24 256 Joint Stock Company TransTeleCom AS20485 RU
217.150.44.128/25 128 Joint Stock Company TransTeleCom AS20485 RU
217.150.43.128/25 128 Joint Stock Company TransTeleCom AS20485 RU
217.150.40.0/25 128 Joint Stock Company TransTeleCom AS20485 RU
217.150.42.0/25 128 Joint Stock Company TransTeleCom AS20485 RU
217.150.41.128/25 128 Joint Stock Company TransTeleCom AS20485 RU
217.150.41.0/26 64 Joint Stock Company TransTeleCom AS20485 RU
217.150.44.0/26 64 Joint Stock Company TransTeleCom AS20485 RU
217.150.43.0/26 64 Joint Stock Company TransTeleCom AS20485 RU
217.150.42.128/26 64 Joint Stock Company TransTeleCom AS20485 RU
217.150.40.192/26 64 Joint Stock Company TransTeleCom AS20485 RU
217.150.40.128/27 32 Joint Stock Company TransTeleCom AS20485 RU
217.150.44.96/27 32 Joint Stock Company TransTeleCom AS20485 RU
217.150.43.64/27 32 Joint Stock Company TransTeleCom AS20485 RU
217.150.42.192/27 32 Joint Stock Company TransTeleCom AS20485 RU
217.150.41.64/27 32 Joint Stock Company TransTeleCom AS20485 RU
217.150.41.112/28 16 Joint Stock Company TransTeleCom AS20485 RU
217.150.40.160/28 16 Joint Stock Company TransTeleCom AS20485 RU
217.150.44.80/28 16 Joint Stock Company TransTeleCom AS20485 RU
217.150.42.224/28 16 Joint Stock Company TransTeleCom AS20485 RU
217.150.43.96/28 16 Joint Stock Company TransTeleCom AS20485 RU
217.150.44.72/29 8 Joint Stock Company TransTeleCom AS20485 RU
217.150.43.120/29 8 Joint Stock Company TransTeleCom AS20485 RU
217.150.43.112/29 8 Joint Stock Company TransTeleCom AS20485 RU
217.150.42.248/29 8 Joint Stock Company TransTeleCom AS20485 RU
217.150.40.184/29 8 Joint Stock Company TransTeleCom AS20485 RU
217.150.42.240/29 8 Joint Stock Company TransTeleCom AS20485 RU
217.150.41.108/30 4 Joint Stock Company TransTeleCom AS20485 RU
217.150.41.96/30 4 Joint Stock Company TransTeleCom AS20485 RU
217.150.40.180/30 4 Joint Stock Company TransTeleCom AS20485 RU
217.150.44.68/30 4 Joint Stock Company TransTeleCom AS20485 RU

First and last addresses in 217.150.40.0/21

217.150.40.0/21 runs from 217.150.40.0 to 217.150.47.255.

First 16
Last 16

Not announced as an exact prefix — covered by the announced supernet 217.150.32.0/19.

Announced prefix
Origin AS
Announcement samples
74,566
Last seen
2026-10-27 12:57:15

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 — RU

Frequently Asked Questions

What is 217.150.40.0/21?

217.150.40.0/21 is a CIDR network block containing 2,048 IPv4 addresses (from 217.150.40.0 to 217.150.47.255). CIDR notation combines an IP address with a prefix length to define a range of addresses.

Who owns the 217.150.40.0/21 network?

The 217.150.40.0/21 range is allocated to Joint Stock Company TransTeleCom and announced via AS20485 from Russia.

Last updated: 2026-10-27 13:24:05 UTC
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