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 v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →
About OpenDNS
OpenDNS is an American company providing Domain Name System (DNS) resolution services—with features such as phishing protection, optional content filtering, and DNS lookup in its DNS servers—and a cloud computing security product suite, Umbrella, designed to protect enterprise customers from malware, botnets, phishing, and targeted online attacks. The OpenDNS Global Network processes an estimated 100 billion DNS queries daily from 85 million users through 25 data centers worldwide.
⚠ 1 MOAS prefix — multiple origin ASNs detected
All MOAS anomalies →A previously stable prefix originated by AS25605 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) |
|---|---|---|
| 198.41.13.0/24 | AS25605, AS36692 | 2026-07-23 22:38:43 |
Network profile
Source: PeeringDB →Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 155.190.249.0/24 | 256 |
0.0%
|
Cisco OpenDNS, LLC | US | — | — |
| 198.41.11.0/24 | 256 |
0.0%
|
Cisco OpenDNS, LLC | US | — | — |
| 198.41.13.0/24 | 256 |
0.0%
|
Cisco OpenDNS, LLC | US | — | — |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS25605 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 |
|---|---|---|
| 198.41.11.0/24 | 5,071 | 2026-07-23 22:25:15 |
| 155.190.249.0/24 | 5,041 | 2026-07-23 22:25:16 |
| 198.41.13.0/24 | 616 | 2026-07-23 19:18:57 |
Frequently Asked Questions
What is AS25605?
AS25605 is an Autonomous System Number assigned to Cisco OpenDNS, LLC. 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 AS25605 announce?
AS25605 announces 512 IPv4 addresses distributed across 2 routed CIDR prefixes. The network is registered in United States.
Who operates AS25605?
AS25605 is operated by Cisco OpenDNS, LLC. The organization is based in United States. You can view all IP ranges and related ASNs on the organization page.
What country is AS25605 registered in?
AS25605 is registered in United States. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
