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
- Academic allocation +6
- Trust score 71 / 100
Experimental · trust-vectors model v1.1.0 — a transparent heuristic, not a definitive verdict. How it works →
Network profile
Source: PeeringDB →AS4130 — global IP footprint
Cities where AS4130 has measurable IPv4 allocation. Click any dot to open that city's page. Size and color scale with IP count.
Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 136.142.0.0/16 | 65.5K |
18.2%
|
University of Pittsburgh | US | Pennsylvania | Pittsburgh |
| 192.52.164.0/23 | 512 |
0.6%
|
University of Pittsburgh | US | — | — |
| 192.52.163.0/24 | 256 |
1.6%
|
University of Pittsburgh | US | — | — |
| 192.52.240.0/24 | 256 |
1.6%
|
University of Pittsburgh | US | Pennsylvania | Pittsburgh |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS4130 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 |
|---|---|---|
| 192.52.164.0/23 | 14,109 | 2026-07-18 12:00:59 |
| 192.52.240.0/24 | 14,082 | 2026-07-18 12:00:59 |
| 192.52.163.0/24 | 14,037 | 2026-07-18 12:00:59 |
| 136.142.0.0/16 | 9,482 | 2026-07-18 12:00:59 |
Frequently Asked Questions
What is AS4130?
AS4130 is an Autonomous System Number assigned to University of Pittsburgh. 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 AS4130 announce?
AS4130 announces 66.6K IPv4 addresses distributed across 4 routed CIDR prefixes. The network is registered in United States.
Who operates AS4130?
AS4130 is operated by University of Pittsburgh. The organization is based in United States. You can view all IP ranges and related ASNs on the organization page.
What country is AS4130 registered in?
AS4130 is registered in United States. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
