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
- Enterprise allocation +4
- Trust score 69 / 100
Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →
About this organization
Cisco Systems, Inc., doing business as Cisco, is an American multinational technology conglomerate corporation that develops, manufactures, and sells hardware, software, telecommunications equipment and other high-technology services and products focused on networking, cyber security and AI. Cisco specializes in specific tech markets, such as the Internet of things (IoT), domain security, videoconferencing, and energy management, including products such as Webex, OpenDNS, Jabber, and Jasper.
Network profile
Source: PeeringDB →Present at 6 internet exchanges: Equinix San Jose, Equinix Ashburn, Equinix Chicago, Equinix Dallas, AMS-IX, Equinix Amsterdam: Equinix IX - AM Metro
Top CIDR ranges
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS55219 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 |
|---|---|---|
| 12.167.151.0/24 | 9,082 | 2026-07-24 16:06:46 |
| 172.110.204.0/22 | 5,868 | 2026-07-24 15:47:42 |
| 172.110.204.0/23 | 5,502 | 2026-07-24 16:11:34 |
| 198.148.78.0/23 | 5,268 | 2026-07-24 16:11:34 |
Frequently Asked Questions
What is AS55219?
AS55219 is an Autonomous System Number assigned to Cisco Systems, Inc.. 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 AS55219 announce?
AS55219 announces 1.8K IPv4 addresses distributed across 3 routed CIDR prefixes. The network is registered in United States.
Who operates AS55219?
AS55219 is operated by CISCO SYSTEMS, INC.. The organization is based in United States. You can view all IP ranges and related ASNs on the organization page.
What country is AS55219 registered in?
AS55219 is registered in United States. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
