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CIDR Range

208.90.105.128/26

64 IPs /26 Arkansas Research and Education Optical Network AS40581 United States ARIN
Addresses
64
64
IP Range
208.90.105.128
→ 208.90.105.191
Sub-ranges
0+
within this block
PTR Density
10.9%
7 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 208.90.105.128/26

208.90.105.128 208.90.105.129 208.90.105.130 208.90.105.131 208.90.105.132 208.90.105.133 208.90.105.134 208.90.105.135 208.90.105.136 208.90.105.137 208.90.105.138 208.90.105.139 208.90.105.140 208.90.105.141 208.90.105.142 208.90.105.143 208.90.105.144 208.90.105.145 208.90.105.146 208.90.105.147 208.90.105.148 208.90.105.149 208.90.105.150 208.90.105.151 208.90.105.152 208.90.105.153 208.90.105.154 208.90.105.155 208.90.105.156 208.90.105.157 208.90.105.158 208.90.105.159 208.90.105.160 208.90.105.161 208.90.105.162 208.90.105.163 208.90.105.164 208.90.105.165 208.90.105.166 208.90.105.167 208.90.105.168 208.90.105.169 208.90.105.170 208.90.105.171 208.90.105.172 208.90.105.173 208.90.105.174 208.90.105.175 208.90.105.176 208.90.105.177 208.90.105.178 208.90.105.179 208.90.105.180 208.90.105.181 208.90.105.182 208.90.105.183 208.90.105.184 208.90.105.185 208.90.105.186 208.90.105.187 208.90.105.188 208.90.105.189 208.90.105.190 208.90.105.191

BGP Routing

Live BGP anomalies →

Not announced as an exact prefix — covered by the announced supernet 208.90.104.0/21.

Announced prefix
208.90.104.0/21
Origin AS
AS40581
Announcement samples
6,860
Last seen
2026-07-24 13:53:57

Frequently Asked Questions

What is 208.90.105.128/26?

208.90.105.128/26 is a CIDR network block containing 64 IPv4 addresses (from 208.90.105.128 to 208.90.105.191). CIDR notation combines an IP address with a prefix length to define a range of addresses.

Who owns the 208.90.105.128/26 network?

The 208.90.105.128/26 range is allocated to Arkansas Research and Education Optical Network and announced via AS40581 from United States.

How many IP addresses are in 208.90.105.128/26?

208.90.105.128/26 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 13:55:31 UTC
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