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CIDR Range

100.42.171.192/26

64 IPs /26 Douglas FastNet AS13692 United States ARIN
Addresses
64
64
IP Range
100.42.171.192
→ 100.42.171.255
Sub-ranges
0+
within this block
PTR Density
98.4%
63 of 64 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.

76/100
Moderate
How this score is built

Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →

Geolocation

All 64 IP addresses in 100.42.171.192/26

100.42.171.192 100.42.171.193 100.42.171.194 100.42.171.195 100.42.171.196 100.42.171.197 100.42.171.198 100.42.171.199 100.42.171.200 100.42.171.201 100.42.171.202 100.42.171.203 100.42.171.204 100.42.171.205 100.42.171.206 100.42.171.207 100.42.171.208 100.42.171.209 100.42.171.210 100.42.171.211 100.42.171.212 100.42.171.213 100.42.171.214 100.42.171.215 100.42.171.216 100.42.171.217 100.42.171.218 100.42.171.219 100.42.171.220 100.42.171.221 100.42.171.222 100.42.171.223 100.42.171.224 100.42.171.225 100.42.171.226 100.42.171.227 100.42.171.228 100.42.171.229 100.42.171.230 100.42.171.231 100.42.171.232 100.42.171.233 100.42.171.234 100.42.171.235 100.42.171.236 100.42.171.237 100.42.171.238 100.42.171.239 100.42.171.240 100.42.171.241 100.42.171.242 100.42.171.243 100.42.171.244 100.42.171.245 100.42.171.246 100.42.171.247 100.42.171.248 100.42.171.249 100.42.171.250 100.42.171.251 100.42.171.252 100.42.171.253 100.42.171.254 100.42.171.255

BGP Routing

Live BGP anomalies →

Not announced as an exact prefix — covered by the announced supernet 100.42.160.0/20.

Announced prefix
100.42.160.0/20
Origin AS
AS13692
Announcement samples
5,145
Last seen
2026-07-24 16:42:36

RIR Ownership History

Atom feed ⇲

Allocation changes captured weekly from regional internet registry (RIR) delegation files.

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

Frequently Asked Questions

What is 100.42.171.192/26?

100.42.171.192/26 is a CIDR network block containing 64 IPv4 addresses (from 100.42.171.192 to 100.42.171.255). CIDR notation combines an IP address with a prefix length to define a range of addresses.

Who owns the 100.42.171.192/26 network?

The 100.42.171.192/26 range is allocated to Douglas FastNet and announced via AS13692 from United States.

How many IP addresses are in 100.42.171.192/26?

100.42.171.192/26 contains exactly 64 usable IPv4 addresses. A /26 prefix length means 64 addresses are covered by this single routing entry.

Last updated: 2026-07-24 17:25:31 UTC
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