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CIDR Range

207.54.72.0/23

512 IPs /23 United States ARIN
Addresses
512
512
IP Range
207.54.72.0
→ 207.54.73.255
Sub-ranges
12+
within this block
PTR Density
30.7%
157 of 512 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.

73/100
Moderate
How this score is built

Experimental · trust-vectors model v1.2.1 — a transparent heuristic, not a definitive verdict. How it works →

Ranges inside 207.54.72.0/23

CIDRIPsOrganizationASNCountry
207.54.72.0/24 256 Cisco Systems Ironport Division AS30238 NL
207.54.72.0/24 256 Cisco Systems Ironport Division AS30238 US
207.54.72.0/24 256 — — US
207.54.73.0/24 256 Cisco Systems Ironport Division AS16417 US
207.54.73.0/24 256 Cisco Systems Ironport Division AS16417 US
207.54.73.128/25 128 — — US
207.54.73.0/26 64 — — US
207.54.73.64/27 32 — — US
207.54.73.112/28 16 — — US
207.54.73.104/29 8 — — US
207.54.73.96/30 4 — — US
207.54.73.100/30 4 — — US

First 256 of 512 IP addresses in 207.54.72.0/23

207.54.72.0 207.54.72.1 207.54.72.2 207.54.72.3 207.54.72.4 207.54.72.5 207.54.72.6 207.54.72.7 207.54.72.8 207.54.72.9 207.54.72.10 207.54.72.11 207.54.72.12 207.54.72.13 207.54.72.14 207.54.72.15 207.54.72.16 207.54.72.17 207.54.72.18 207.54.72.19 207.54.72.20 207.54.72.21 207.54.72.22 207.54.72.23 207.54.72.24 207.54.72.25 207.54.72.26 207.54.72.27 207.54.72.28 207.54.72.29 207.54.72.30 207.54.72.31 207.54.72.32 207.54.72.33 207.54.72.34 207.54.72.35 207.54.72.36 207.54.72.37 207.54.72.38 207.54.72.39 207.54.72.40 207.54.72.41 207.54.72.42 207.54.72.43 207.54.72.44 207.54.72.45 207.54.72.46 207.54.72.47 207.54.72.48 207.54.72.49 207.54.72.50 207.54.72.51 207.54.72.52 207.54.72.53 207.54.72.54 207.54.72.55 207.54.72.56 207.54.72.57 207.54.72.58 207.54.72.59 207.54.72.60 207.54.72.61 207.54.72.62 207.54.72.63 207.54.72.64 207.54.72.65 207.54.72.66 207.54.72.67 207.54.72.68 207.54.72.69 207.54.72.70 207.54.72.71 207.54.72.72 207.54.72.73 207.54.72.74 207.54.72.75 207.54.72.76 207.54.72.77 207.54.72.78 207.54.72.79 207.54.72.80 207.54.72.81 207.54.72.82 207.54.72.83 207.54.72.84 207.54.72.85 207.54.72.86 207.54.72.87 207.54.72.88 207.54.72.89 207.54.72.90 207.54.72.91 207.54.72.92 207.54.72.93 207.54.72.94 207.54.72.95 207.54.72.96 207.54.72.97 207.54.72.98 207.54.72.99 207.54.72.100 207.54.72.101 207.54.72.102 207.54.72.103 207.54.72.104 207.54.72.105 207.54.72.106 207.54.72.107 207.54.72.108 207.54.72.109 207.54.72.110 207.54.72.111 207.54.72.112 207.54.72.113 207.54.72.114 207.54.72.115 207.54.72.116 207.54.72.117 207.54.72.118 207.54.72.119 207.54.72.120 207.54.72.121 207.54.72.122 207.54.72.123 207.54.72.124 207.54.72.125 207.54.72.126 207.54.72.127 207.54.72.128 207.54.72.129 207.54.72.130 207.54.72.131 207.54.72.132 207.54.72.133 207.54.72.134 207.54.72.135 207.54.72.136 207.54.72.137 207.54.72.138 207.54.72.139 207.54.72.140 207.54.72.141 207.54.72.142 207.54.72.143 207.54.72.144 207.54.72.145 207.54.72.146 207.54.72.147 207.54.72.148 207.54.72.149 207.54.72.150 207.54.72.151 207.54.72.152 207.54.72.153 207.54.72.154 207.54.72.155 207.54.72.156 207.54.72.157 207.54.72.158 207.54.72.159 207.54.72.160 207.54.72.161 207.54.72.162 207.54.72.163 207.54.72.164 207.54.72.165 207.54.72.166 207.54.72.167 207.54.72.168 207.54.72.169 207.54.72.170 207.54.72.171 207.54.72.172 207.54.72.173 207.54.72.174 207.54.72.175 207.54.72.176 207.54.72.177 207.54.72.178 207.54.72.179 207.54.72.180 207.54.72.181 207.54.72.182 207.54.72.183 207.54.72.184 207.54.72.185 207.54.72.186 207.54.72.187 207.54.72.188 207.54.72.189 207.54.72.190 207.54.72.191 207.54.72.192 207.54.72.193 207.54.72.194 207.54.72.195 207.54.72.196 207.54.72.197 207.54.72.198 207.54.72.199 207.54.72.200 207.54.72.201 207.54.72.202 207.54.72.203 207.54.72.204 207.54.72.205 207.54.72.206 207.54.72.207 207.54.72.208 207.54.72.209 207.54.72.210 207.54.72.211 207.54.72.212 207.54.72.213 207.54.72.214 207.54.72.215 207.54.72.216 207.54.72.217 207.54.72.218 207.54.72.219 207.54.72.220 207.54.72.221 207.54.72.222 207.54.72.223 207.54.72.224 207.54.72.225 207.54.72.226 207.54.72.227 207.54.72.228 207.54.72.229 207.54.72.230 207.54.72.231 207.54.72.232 207.54.72.233 207.54.72.234 207.54.72.235 207.54.72.236 207.54.72.237 207.54.72.238 207.54.72.239 207.54.72.240 207.54.72.241 207.54.72.242 207.54.72.243 207.54.72.244 207.54.72.245 207.54.72.246 207.54.72.247 207.54.72.248 207.54.72.249 207.54.72.250 207.54.72.251 207.54.72.252 207.54.72.253 207.54.72.254 207.54.72.255 + 256 more (range too large to list inline)

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 207.54.72.0/23?

207.54.72.0/23 is a CIDR network block containing 512 IPv4 addresses (from 207.54.72.0 to 207.54.73.255). CIDR notation combines an IP address with a prefix length to define a range of addresses.

Who owns the 207.54.72.0/23 network?

The 207.54.72.0/23 range is allocated to an unknown organization from United States.

Last updated: 2026-10-16 16:39:05 UTC
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