CIDR Range

199.5.21.0/25

128 IPs /25 RH & Co. IT Services Ltd AS205220 United States ARIN

Addresses

128

IP Range

199.5.21.0

→ 199.5.21.127

Sub-ranges

within this block

PTR Density

0.0%

0 of 128 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

Baseline (neutral) 65
Long-established allocation (33y) +6
Trust score 71 / 100

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

Geolocation

All 128 IP addresses in 199.5.21.0/25

199.5.21.0 199.5.21.1 199.5.21.2 199.5.21.3 199.5.21.4 199.5.21.5 199.5.21.6 199.5.21.7 199.5.21.8 199.5.21.9 199.5.21.10 199.5.21.11 199.5.21.12 199.5.21.13 199.5.21.14 199.5.21.15 199.5.21.16 199.5.21.17 199.5.21.18 199.5.21.19 199.5.21.20 199.5.21.21 199.5.21.22 199.5.21.23 199.5.21.24 199.5.21.25 199.5.21.26 199.5.21.27 199.5.21.28 199.5.21.29 199.5.21.30 199.5.21.31 199.5.21.32 199.5.21.33 199.5.21.34 199.5.21.35 199.5.21.36 199.5.21.37 199.5.21.38 199.5.21.39 199.5.21.40 199.5.21.41 199.5.21.42 199.5.21.43 199.5.21.44 199.5.21.45 199.5.21.46 199.5.21.47 199.5.21.48 199.5.21.49 199.5.21.50 199.5.21.51 199.5.21.52 199.5.21.53 199.5.21.54 199.5.21.55 199.5.21.56 199.5.21.57 199.5.21.58 199.5.21.59 199.5.21.60 199.5.21.61 199.5.21.62 199.5.21.63 199.5.21.64 199.5.21.65 199.5.21.66 199.5.21.67 199.5.21.68 199.5.21.69 199.5.21.70 199.5.21.71 199.5.21.72 199.5.21.73 199.5.21.74 199.5.21.75 199.5.21.76 199.5.21.77 199.5.21.78 199.5.21.79 199.5.21.80 199.5.21.81 199.5.21.82 199.5.21.83 199.5.21.84 199.5.21.85 199.5.21.86 199.5.21.87 199.5.21.88 199.5.21.89 199.5.21.90 199.5.21.91 199.5.21.92 199.5.21.93 199.5.21.94 199.5.21.95 199.5.21.96 199.5.21.97 199.5.21.98 199.5.21.99 199.5.21.100 199.5.21.101 199.5.21.102 199.5.21.103 199.5.21.104 199.5.21.105 199.5.21.106 199.5.21.107 199.5.21.108 199.5.21.109 199.5.21.110 199.5.21.111 199.5.21.112 199.5.21.113 199.5.21.114 199.5.21.115 199.5.21.116 199.5.21.117 199.5.21.118 199.5.21.119 199.5.21.120 199.5.21.121 199.5.21.122 199.5.21.123 199.5.21.124 199.5.21.125 199.5.21.126 199.5.21.127

BGP Routing

Live BGP anomalies →

Not announced as an exact prefix — covered by the announced supernet 199.5.21.0/24.

Announced prefix

199.5.21.0/24

Origin AS

AS205220

Announcement samples

111,109

Last seen

2026-07-13 06:46:32

Frequently Asked Questions

What is 199.5.21.0/25?

199.5.21.0/25 is a CIDR network block containing 128 IPv4 addresses (from 199.5.21.0 to 199.5.21.127). CIDR notation combines an IP address with a prefix length to define a range of addresses.

Who owns the 199.5.21.0/25 network?

The 199.5.21.0/25 range is allocated to RH & Co. IT Services Ltd and announced via AS205220 from United States.

How many IP addresses are in 199.5.21.0/25?

199.5.21.0/25 contains exactly 128 usable IPv4 addresses. A /25 prefix length means 128 addresses are covered by this single routing entry.

Last updated: 2026-07-24 03:40:31 UTC