AS4211
Maricopa County Government
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.
- Baseline (neutral) 65
- Government allocation +8
- Trust score 73 / 100
Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →
Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 156.42.0.0/16 | 65.5K |
0.0%
|
Maricopa County Government | US | Arizona | Phoenix |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS4211 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.
| Prefix | Announcement samples | Last seen |
|---|---|---|
| 156.42.0.0/16 | 5,192 | 2026-07-24 07:21:44 |
Frequently Asked Questions
What is AS4211?
AS4211 is an Autonomous System Number assigned to Maricopa County Government. An ASN identifies a network that controls a specific set of IP addresses and determines how traffic is routed across the internet via BGP (Border Gateway Protocol).
How many IP addresses does AS4211 announce?
AS4211 announces 65.5K IPv4 addresses distributed across 1 routed CIDR prefixes. The network is registered in United States.
Who operates AS4211?
AS4211 is operated by Maricopa County Government. The organization is based in United States. You can view all IP ranges and related ASNs on the organization page.
What country is AS4211 registered in?
AS4211 is registered in United States. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
