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
- Multiple-origin (MOAS) routing anomaly −12
- Enterprise allocation +4
- Trust score 57 / 100
Experimental · trust-vectors model v1.1.0 — a transparent heuristic, not a definitive verdict. How it works →
About Corporation for Education Network Initiatives in California
The Corporation for Education Network Initiatives in California is a nonprofit corporation formed in 1997 to provide high-performance, high-bandwidth networking services to California universities and research institutions. Through this corporation, representatives from all of California's K-20 public education combine their networking resources toward the operation, deployment, and maintenance of the California Research and Education Network, or CalREN.
⚠ 1 MOAS prefix — multiple origin ASNs detected
All MOAS anomalies →A previously stable prefix originated by AS2153 is now also announced by another ASN (MOAS — Multiple-Origin AS), detected from our RIPE RIS collectors. Often benign (anycast, multi-homing, or a recent transfer) — but it can signal a route leak or prefix hijack, so it's worth inspecting.
| Prefix | Origin ASNs | Last detected (UTC) |
|---|---|---|
| 132.241.61.0/24 | AS2152, AS2153 | 2026-07-17 17:52:37 |
Network profile
Source: PeeringDB →Present at 1 internet exchange: Pacific Wave
Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 130.150.12.0/23 | 512 |
0.0%
|
CENIC | US | — | — |
| 137.164.26.0/23 | 512 |
23.4%
|
CENIC | US | — | — |
| 209.129.60.0/23 | 512 |
0.0%
|
CENIC | US | — | — |
| 136.168.238.0/24 | 256 |
1.2%
|
CENIC | US | — | — |
| 137.150.137.0/24 | 256 |
2.3%
|
CENIC | US | — | — |
| 137.164.17.0/24 | 256 |
1.6%
|
CENIC | US | — | — |
| 137.164.25.0/24 | 256 |
6.3%
|
CENIC | US | — | — |
| 137.164.28.0/24 | 256 |
7.0%
|
CENIC | US | — | — |
| 205.154.51.0/24 | 256 |
3.1%
|
CENIC | US | — | — |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS2153 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 |
|---|---|---|
| 130.150.12.0/23 | 146 | 2026-07-17 06:34:56 |
| 136.168.238.0/24 | 106 | 2026-07-17 06:34:56 |
| 209.129.61.0/24 | 106 | 2026-07-17 06:34:56 |
| 209.129.60.0/24 | 106 | 2026-07-17 06:34:56 |
| 132.241.61.0/24 | 78 | 2026-07-17 06:34:56 |
| 137.150.137.0/24 | 77 | 2026-07-17 06:34:56 |
| 137.164.25.0/24 | 65 | 2026-07-17 16:32:31 |
| 205.154.51.0/24 | 64 | 2026-07-17 16:32:31 |
| 137.164.26.0/23 | 63 | 2026-07-17 16:32:31 |
| 137.164.28.0/24 | 63 | 2026-07-17 16:32:31 |
| 137.164.17.0/24 | 63 | 2026-07-17 16:32:31 |
| 198.188.2.0/26 | 31 | 2026-07-12 02:40:01 |
Frequently Asked Questions
What is AS2153?
AS2153 is an Autonomous System Number assigned to CENIC. 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 AS2153 announce?
AS2153 announces 3.1K IPv4 addresses distributed across 9 routed CIDR prefixes. The network is registered in United States.
Who operates AS2153?
AS2153 is operated by CENIC. The organization is based in United States. You can view all IP ranges and related ASNs on the organization page.
What country is AS2153 registered in?
AS2153 is registered in United States. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
