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CIDR Range

66.54.240.0/24

Addresses
256
256
Sub-ranges
50+
within this block
PTR Density
0.0%
0 of 256 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.

64/100
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 66.54.240.0/24

CIDRIPsOrganizationASNCountry
66.54.240.128/26 64 GTT Communications Inc. AS3257 US
66.54.240.128/27 32 GTT Communications Inc. AS3257 US
66.54.240.0/27 32 GTT Communications Inc. AS3257 US
66.54.240.32/28 16 GTT Communications Inc. AS3257 MX
66.54.240.80/28 16 GTT Communications Inc. AS3257 US
66.54.240.80/28 16 GTT Communications Inc. AS3257 US
66.54.240.80/28 16 GTT Communications Inc. AS3257 US
66.54.240.96/28 16 GTT Communications Inc. AS3257 US
66.54.240.96/28 16 GTT Communications Inc. AS3257 US
66.54.240.176/28 16 GTT Communications Inc. AS3257 MX
66.54.240.160/28 16 GTT Communications Inc. AS3257 US
66.54.240.160/28 16 GTT Communications Inc. AS3257 US
66.54.240.144/28 16 GTT Communications Inc. AS3257 US
66.54.240.224/28 16 GTT Communications Inc. AS3257 US
66.54.240.32/28 16 GTT Communications Inc. AS3257 US
66.54.240.0/28 16 GTT Communications Inc. AS3257 US
66.54.240.32/28 16 GTT Communications Inc. AS3257 MX
66.54.240.224/28 16 GTT Communications Inc. AS3257 US
66.54.240.224/28 16 GTT Communications Inc. AS3257 US
66.54.240.240/29 8 GTT Communications Inc. AS3257 US
66.54.240.240/29 8 GTT Communications Inc. AS3257 CA
66.54.240.176/29 8 GTT Communications Inc. AS3257 US
66.54.240.248/29 8 GTT Communications Inc. AS3257 US
66.54.240.248/29 8 GTT Communications Inc. AS3257 US
66.54.240.248/29 8 GTT Communications Inc. AS3257 US
66.54.240.136/29 8 GTT Communications Inc. AS3257 US
66.54.240.240/29 8 GTT Communications Inc. AS3257 CA
66.54.240.184/29 8 GTT Communications Inc. AS3257 US
66.54.240.208/29 8 GTT Communications Inc. AS3257 US
66.54.240.208/29 8 GTT Communications Inc. AS3257 US
66.54.240.200/29 8 GTT Communications Inc. AS3257 US
66.54.240.200/29 8 GTT Communications Inc. AS3257 US

First and last addresses in 66.54.240.0/24

66.54.240.0/24 runs from 66.54.240.0 to 66.54.240.255.

First 16
Last 16

Not announced as an exact prefix — covered by the announced supernet 66.54.128.0/17.

Announced prefix
Origin AS
⚠ 2 origins (MOAS)
Announcement samples
98,773
Last seen
2026-11-15 15:41:17

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 66.54.240.0/24?

66.54.240.0/24 is a CIDR network block containing 256 IPv4 addresses (from 66.54.240.0 to 66.54.240.255). CIDR notation combines an IP address with a prefix length to define a range of addresses.

Who owns the 66.54.240.0/24 network?

The 66.54.240.0/24 range is allocated to GTT Communications Inc. and announced via AS3257 from United States.

How many IP addresses are in 66.54.240.0/24?

66.54.240.0/24 contains exactly 256 usable IPv4 addresses. A /24 prefix length means 256 addresses are covered by this single routing entry.

Last updated: 2026-11-15 17:39:06 UTC
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