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CIDR Range

198.28.172.0/23

512 IPs /23 C Spire Fiber AS11272 United States ARIN
Addresses
512
512
IP Range
198.28.172.0
→ 198.28.173.255
Sub-ranges
2+
within this block
PTR Density
0.0%
0 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.

65/100
Moderate
How this score is built

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

Ranges inside 198.28.172.0/23

CIDRIPsOrganizationASNCountry
198.28.172.0/24 256 C Spire Fiber AS11272 US
198.28.173.0/24 256 C Spire Fiber AS11272 US

Geolocation

First 256 of 512 IP addresses in 198.28.172.0/23

198.28.172.0 198.28.172.1 198.28.172.2 198.28.172.3 198.28.172.4 198.28.172.5 198.28.172.6 198.28.172.7 198.28.172.8 198.28.172.9 198.28.172.10 198.28.172.11 198.28.172.12 198.28.172.13 198.28.172.14 198.28.172.15 198.28.172.16 198.28.172.17 198.28.172.18 198.28.172.19 198.28.172.20 198.28.172.21 198.28.172.22 198.28.172.23 198.28.172.24 198.28.172.25 198.28.172.26 198.28.172.27 198.28.172.28 198.28.172.29 198.28.172.30 198.28.172.31 198.28.172.32 198.28.172.33 198.28.172.34 198.28.172.35 198.28.172.36 198.28.172.37 198.28.172.38 198.28.172.39 198.28.172.40 198.28.172.41 198.28.172.42 198.28.172.43 198.28.172.44 198.28.172.45 198.28.172.46 198.28.172.47 198.28.172.48 198.28.172.49 198.28.172.50 198.28.172.51 198.28.172.52 198.28.172.53 198.28.172.54 198.28.172.55 198.28.172.56 198.28.172.57 198.28.172.58 198.28.172.59 198.28.172.60 198.28.172.61 198.28.172.62 198.28.172.63 198.28.172.64 198.28.172.65 198.28.172.66 198.28.172.67 198.28.172.68 198.28.172.69 198.28.172.70 198.28.172.71 198.28.172.72 198.28.172.73 198.28.172.74 198.28.172.75 198.28.172.76 198.28.172.77 198.28.172.78 198.28.172.79 198.28.172.80 198.28.172.81 198.28.172.82 198.28.172.83 198.28.172.84 198.28.172.85 198.28.172.86 198.28.172.87 198.28.172.88 198.28.172.89 198.28.172.90 198.28.172.91 198.28.172.92 198.28.172.93 198.28.172.94 198.28.172.95 198.28.172.96 198.28.172.97 198.28.172.98 198.28.172.99 198.28.172.100 198.28.172.101 198.28.172.102 198.28.172.103 198.28.172.104 198.28.172.105 198.28.172.106 198.28.172.107 198.28.172.108 198.28.172.109 198.28.172.110 198.28.172.111 198.28.172.112 198.28.172.113 198.28.172.114 198.28.172.115 198.28.172.116 198.28.172.117 198.28.172.118 198.28.172.119 198.28.172.120 198.28.172.121 198.28.172.122 198.28.172.123 198.28.172.124 198.28.172.125 198.28.172.126 198.28.172.127 198.28.172.128 198.28.172.129 198.28.172.130 198.28.172.131 198.28.172.132 198.28.172.133 198.28.172.134 198.28.172.135 198.28.172.136 198.28.172.137 198.28.172.138 198.28.172.139 198.28.172.140 198.28.172.141 198.28.172.142 198.28.172.143 198.28.172.144 198.28.172.145 198.28.172.146 198.28.172.147 198.28.172.148 198.28.172.149 198.28.172.150 198.28.172.151 198.28.172.152 198.28.172.153 198.28.172.154 198.28.172.155 198.28.172.156 198.28.172.157 198.28.172.158 198.28.172.159 198.28.172.160 198.28.172.161 198.28.172.162 198.28.172.163 198.28.172.164 198.28.172.165 198.28.172.166 198.28.172.167 198.28.172.168 198.28.172.169 198.28.172.170 198.28.172.171 198.28.172.172 198.28.172.173 198.28.172.174 198.28.172.175 198.28.172.176 198.28.172.177 198.28.172.178 198.28.172.179 198.28.172.180 198.28.172.181 198.28.172.182 198.28.172.183 198.28.172.184 198.28.172.185 198.28.172.186 198.28.172.187 198.28.172.188 198.28.172.189 198.28.172.190 198.28.172.191 198.28.172.192 198.28.172.193 198.28.172.194 198.28.172.195 198.28.172.196 198.28.172.197 198.28.172.198 198.28.172.199 198.28.172.200 198.28.172.201 198.28.172.202 198.28.172.203 198.28.172.204 198.28.172.205 198.28.172.206 198.28.172.207 198.28.172.208 198.28.172.209 198.28.172.210 198.28.172.211 198.28.172.212 198.28.172.213 198.28.172.214 198.28.172.215 198.28.172.216 198.28.172.217 198.28.172.218 198.28.172.219 198.28.172.220 198.28.172.221 198.28.172.222 198.28.172.223 198.28.172.224 198.28.172.225 198.28.172.226 198.28.172.227 198.28.172.228 198.28.172.229 198.28.172.230 198.28.172.231 198.28.172.232 198.28.172.233 198.28.172.234 198.28.172.235 198.28.172.236 198.28.172.237 198.28.172.238 198.28.172.239 198.28.172.240 198.28.172.241 198.28.172.242 198.28.172.243 198.28.172.244 198.28.172.245 198.28.172.246 198.28.172.247 198.28.172.248 198.28.172.249 198.28.172.250 198.28.172.251 198.28.172.252 198.28.172.253 198.28.172.254 198.28.172.255 + 256 more (range too large to list inline)

BGP Routing

Live BGP anomalies →

Not announced as an exact prefix — covered by the announced supernet 198.28.160.0/19.

Announced prefix
198.28.160.0/19
Origin AS
AS11272
Announcement samples
18,800
Last seen
2026-07-30 07:38:50

Frequently Asked Questions

What is 198.28.172.0/23?

198.28.172.0/23 is a CIDR network block containing 512 IPv4 addresses (from 198.28.172.0 to 198.28.173.255). CIDR notation combines an IP address with a prefix length to define a range of addresses.

Who owns the 198.28.172.0/23 network?

The 198.28.172.0/23 range is allocated to C Spire Fiber and announced via AS11272 from United States.

Last updated: 2026-07-30 09:40:33 UTC
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