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CIDR Range

154.31.136.0/21

2.0K IPs /21 FASTNET DATA INC AS8796 Germany AFRINIC
Addresses
2,048
2.0K
IP Range
154.31.136.0
→ 154.31.143.255
Sub-ranges
4+
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.

71/100
Moderate
How this score is built

Experimental · trust-vectors model v1.1.0 — a transparent heuristic, not a definitive verdict. How it works →

Ranges inside 154.31.136.0/21

CIDRIPsOrganizationASNCountry
154.31.140.0/22 1.0K FASTNET DATA INC AS8796 US
154.31.138.0/23 512 FASTNET DATA INC AS8796 US
154.31.136.0/24 256 Ddos Protection Ltd AS213840 US
154.31.137.0/24 256 FASTNET DATA INC AS8796 US

Geolocation

First 256 of 2,048 IP addresses in 154.31.136.0/21

154.31.136.0 154.31.136.1 154.31.136.2 154.31.136.3 154.31.136.4 154.31.136.5 154.31.136.6 154.31.136.7 154.31.136.8 154.31.136.9 154.31.136.10 154.31.136.11 154.31.136.12 154.31.136.13 154.31.136.14 154.31.136.15 154.31.136.16 154.31.136.17 154.31.136.18 154.31.136.19 154.31.136.20 154.31.136.21 154.31.136.22 154.31.136.23 154.31.136.24 154.31.136.25 154.31.136.26 154.31.136.27 154.31.136.28 154.31.136.29 154.31.136.30 154.31.136.31 154.31.136.32 154.31.136.33 154.31.136.34 154.31.136.35 154.31.136.36 154.31.136.37 154.31.136.38 154.31.136.39 154.31.136.40 154.31.136.41 154.31.136.42 154.31.136.43 154.31.136.44 154.31.136.45 154.31.136.46 154.31.136.47 154.31.136.48 154.31.136.49 154.31.136.50 154.31.136.51 154.31.136.52 154.31.136.53 154.31.136.54 154.31.136.55 154.31.136.56 154.31.136.57 154.31.136.58 154.31.136.59 154.31.136.60 154.31.136.61 154.31.136.62 154.31.136.63 154.31.136.64 154.31.136.65 154.31.136.66 154.31.136.67 154.31.136.68 154.31.136.69 154.31.136.70 154.31.136.71 154.31.136.72 154.31.136.73 154.31.136.74 154.31.136.75 154.31.136.76 154.31.136.77 154.31.136.78 154.31.136.79 154.31.136.80 154.31.136.81 154.31.136.82 154.31.136.83 154.31.136.84 154.31.136.85 154.31.136.86 154.31.136.87 154.31.136.88 154.31.136.89 154.31.136.90 154.31.136.91 154.31.136.92 154.31.136.93 154.31.136.94 154.31.136.95 154.31.136.96 154.31.136.97 154.31.136.98 154.31.136.99 154.31.136.100 154.31.136.101 154.31.136.102 154.31.136.103 154.31.136.104 154.31.136.105 154.31.136.106 154.31.136.107 154.31.136.108 154.31.136.109 154.31.136.110 154.31.136.111 154.31.136.112 154.31.136.113 154.31.136.114 154.31.136.115 154.31.136.116 154.31.136.117 154.31.136.118 154.31.136.119 154.31.136.120 154.31.136.121 154.31.136.122 154.31.136.123 154.31.136.124 154.31.136.125 154.31.136.126 154.31.136.127 154.31.136.128 154.31.136.129 154.31.136.130 154.31.136.131 154.31.136.132 154.31.136.133 154.31.136.134 154.31.136.135 154.31.136.136 154.31.136.137 154.31.136.138 154.31.136.139 154.31.136.140 154.31.136.141 154.31.136.142 154.31.136.143 154.31.136.144 154.31.136.145 154.31.136.146 154.31.136.147 154.31.136.148 154.31.136.149 154.31.136.150 154.31.136.151 154.31.136.152 154.31.136.153 154.31.136.154 154.31.136.155 154.31.136.156 154.31.136.157 154.31.136.158 154.31.136.159 154.31.136.160 154.31.136.161 154.31.136.162 154.31.136.163 154.31.136.164 154.31.136.165 154.31.136.166 154.31.136.167 154.31.136.168 154.31.136.169 154.31.136.170 154.31.136.171 154.31.136.172 154.31.136.173 154.31.136.174 154.31.136.175 154.31.136.176 154.31.136.177 154.31.136.178 154.31.136.179 154.31.136.180 154.31.136.181 154.31.136.182 154.31.136.183 154.31.136.184 154.31.136.185 154.31.136.186 154.31.136.187 154.31.136.188 154.31.136.189 154.31.136.190 154.31.136.191 154.31.136.192 154.31.136.193 154.31.136.194 154.31.136.195 154.31.136.196 154.31.136.197 154.31.136.198 154.31.136.199 154.31.136.200 154.31.136.201 154.31.136.202 154.31.136.203 154.31.136.204 154.31.136.205 154.31.136.206 154.31.136.207 154.31.136.208 154.31.136.209 154.31.136.210 154.31.136.211 154.31.136.212 154.31.136.213 154.31.136.214 154.31.136.215 154.31.136.216 154.31.136.217 154.31.136.218 154.31.136.219 154.31.136.220 154.31.136.221 154.31.136.222 154.31.136.223 154.31.136.224 154.31.136.225 154.31.136.226 154.31.136.227 154.31.136.228 154.31.136.229 154.31.136.230 154.31.136.231 154.31.136.232 154.31.136.233 154.31.136.234 154.31.136.235 154.31.136.236 154.31.136.237 154.31.136.238 154.31.136.239 154.31.136.240 154.31.136.241 154.31.136.242 154.31.136.243 154.31.136.244 154.31.136.245 154.31.136.246 154.31.136.247 154.31.136.248 154.31.136.249 154.31.136.250 154.31.136.251 154.31.136.252 154.31.136.253 154.31.136.254 154.31.136.255 + 1.8K more (range too large to list inline)

BGP Routing

Live BGP anomalies →

This block is announced in BGP, observed across our RIPE RIS collectors.

Announced prefix
154.31.136.0/21
Origin AS
AS8796
Announcement samples
8,630
Last seen
2026-07-23 17:49:16

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 154.31.136.0/21?

154.31.136.0/21 is a CIDR network block containing 2,048 IPv4 addresses (from 154.31.136.0 to 154.31.143.255). CIDR notation combines an IP address with a prefix length to define a range of addresses.

Who owns the 154.31.136.0/21 network?

The 154.31.136.0/21 range is allocated to FASTNET DATA INC and announced via AS8796 from Germany.

Last updated: 2026-07-23 18:10:36 UTC
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