Addresses
2,048
2.0K
Sub-ranges
20+
within this block
PTR Density
98.5%
2.0K 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.
76/100
Moderate
How this score is built
- Baseline (neutral) 65
- Long-established allocation (19y) +6
- Has a reverse-DNS (PTR) record +5
- Trust score 76 / 100
Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →
Ranges inside 74.221.8.0/21
| CIDR | IPs | Organization | ASN | Country |
|---|---|---|---|---|
| 74.221.12.0/22 | 1.0K | Ritter Communications | AS21725 | US |
| 74.221.8.0/23 | 512 | Ritter Communications | AS21725 | US |
| 74.221.12.0/23 | 512 | — | — | US |
| 74.221.12.0/23 | 512 | Ritter Communications | AS21725 | US |
| 74.221.8.0/23 | 512 | Ritter Communications | AS21725 | US |
| 74.221.8.0/23 | 512 | — | — | US |
| 74.221.15.0/24 | 256 | Ritter Communications | AS23404 | US |
| 74.221.14.0/24 | 256 | — | — | US |
| 74.221.14.0/24 | 256 | Ritter Communications | AS21725 | US |
| 74.221.13.0/24 | 256 | — | — | US |
| 74.221.10.0/24 | 256 | Ritter Communications | AS21725 | US |
| 74.221.10.0/24 | 256 | Ritter Communications | AS21725 | US |
| 74.221.11.0/24 | 256 | — | — | US |
| 74.221.11.0/24 | 256 | Ritter Communications | AS23404 | US |
| 74.221.11.0/24 | 256 | Ritter Communications | AS23404 | US |
| 74.221.10.0/24 | 256 | — | — | US |
| 74.221.15.0/24 | 256 | — | — | US |
| 74.221.12.128/25 | 128 | — | — | US |
| 74.221.12.0/26 | 64 | — | — | US |
| 74.221.12.64/26 | 64 | — | — | US |
Geolocation
First 256 of 2,048 IP addresses in 74.221.8.0/21
74.221.8.0
74.221.8.1
74.221.8.2
74.221.8.3
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74.221.8.255
+ 1.8K more (range too large to list inline)
BGP Routing
Live BGP anomalies →Not announced as an exact prefix — covered by the announced supernet 74.221.0.0/20.
Announced prefix
Origin AS
Announcement samples
5,451
Last seen
2026-07-23 20:29:55
Frequently Asked Questions
What is 74.221.8.0/21?
74.221.8.0/21 is a CIDR network block containing 2,048 IPv4 addresses (from 74.221.8.0 to 74.221.15.255). CIDR notation combines an IP address with a prefix length to define a range of addresses.
Who owns the 74.221.8.0/21 network?
The 74.221.8.0/21 range is allocated to an unknown organization from United States.
Last updated: 2026-07-23 20:55:31 UTC
