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
- Trust score 65 / 100
Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →
About Parsons Corporation
Parsons Corporation is an American multinational technology-focused defense, intelligence, and infrastructure engineering firm. Founded in 1944, Parsons is headquartered in Chantilly, Virginia, and serves both government and private sector organizations in more than 30 countries.
Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 206.219.198.0/23 | 512 |
2.5%
|
Parsons Corporation | US | — | — |
| 206.219.200.0/23 | 512 |
0.4%
|
Parsons Corporation | US | — | — |
| 209.128.238.0/23 | 512 |
0.4%
|
Parsons Corporation | US | — | — |
| 209.128.254.0/23 | 512 |
0.8%
|
Parsons Corporation | US | Maryland | Ellicott City |
| 206.219.192.0/24 | 256 |
3.5%
|
Parsons Corporation | US | — | — |
| 206.219.195.0/24 | 256 |
0.0%
|
Parsons Corporation | US | — | — |
| 206.219.196.0/24 | 256 |
17.6%
|
Parsons Corporation | US | — | — |
| 206.219.200.0/24 | 256 |
0.8%
|
Parsons Corporation | US | — | — |
| 206.219.202.0/24 | 256 |
0.0%
|
Parsons Corporation | US | — | — |
| 209.128.255.0/24 | 256 |
1.6%
|
Parsons Corporation | US | Maryland | Ellicott City |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS223 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 |
|---|---|---|
| 209.128.254.0/24 | 12,946 | 2026-07-26 12:23:38 |
| 206.219.200.0/24 | 11,241 | 2026-07-26 12:24:57 |
| 206.219.199.0/24 | 9,230 | 2026-07-26 12:24:57 |
| 209.128.255.0/24 | 9,218 | 2026-07-26 12:25:15 |
| 206.219.196.0/24 | 9,216 | 2026-07-26 12:23:33 |
| 206.219.201.0/24 | 8,473 | 2026-07-13 06:46:32 |
| 206.219.200.0/23 | 6,458 | 2026-07-13 06:46:32 |
| 206.219.202.0/24 | 6,456 | 2026-07-13 06:46:32 |
| 206.219.192.0/24 | 6,447 | 2026-07-13 06:46:32 |
| 206.219.195.0/24 | 6,446 | 2026-07-13 06:46:32 |
| 209.128.238.0/24 | 5,701 | 2026-07-26 12:24:18 |
| 206.219.198.0/24 | 4,793 | 2026-07-26 12:25:11 |
| 209.128.239.0/24 | 4,745 | 2026-07-26 12:25:02 |
Frequently Asked Questions
What is AS223?
AS223 is an Autonomous System Number assigned to Parsons Corporation. 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 AS223 announce?
AS223 announces 3.1K IPv4 addresses distributed across 10 routed CIDR prefixes. The network is registered in United States.
Who operates AS223?
AS223 is operated by Parsons Corporation. The organization is based in United States. You can view all IP ranges and related ASNs on the organization page.
What country is AS223 registered in?
AS223 is registered in United States. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
