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 Cisco
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, cybersecurity 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 9 internet exchanges: Equinix Dallas, Equinix Ashburn, Equinix Tokyo, AMS-IX, Equinix San Jose, Equinix Singapore, Equinix Sydney, LINX LON1: Main, DE-CIX Mumbai: DE-CIX Mumbai Peering LAN
AS109 — global IP footprint
Cities where AS109 has measurable IPv4 allocation. Click any dot to open that city's page. Size and color scale with IP count.
Top CIDR ranges
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS109 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 |
|---|---|---|
| 72.163.192.0/19 | 93,809 | 2026-09-07 12:04:11 |
| 64.103.128.0/17 | 90,114 | 2026-09-07 12:04:11 |
| 64.104.128.0/19 | 89,844 | 2026-09-07 12:04:11 |
| 72.163.128.0/18 | 89,356 | 2026-09-07 12:04:11 |
| 173.39.64.0/19 | 68,147 | 2026-09-07 12:04:11 |
| 173.39.0.0/18 | 67,660 | 2026-09-07 12:04:11 |
| 128.107.14.0/23 | 65,978 | 2026-09-07 12:04:11 |
| 173.39.152.0/21 | 34,358 | 2026-09-07 11:43:13 |
| 173.39.144.0/21 | 34,179 | 2026-09-07 11:43:13 |
| 128.107.20.0/23 | 34,019 | 2026-09-07 11:43:13 |
| 173.39.160.0/19 | 34,003 | 2026-09-07 11:43:13 |
| 173.39.128.0/19 | 33,993 | 2026-09-07 11:43:13 |
| 173.39.192.0/20 | 33,965 | 2026-09-07 11:43:13 |
| 72.163.224.0/19 | 33,394 | 2026-09-07 11:43:13 |
| 64.104.96.0/19 | 33,117 | 2026-09-07 11:43:13 |
| 64.104.0.0/18 | 33,108 | 2026-09-07 11:43:13 |
| 64.104.160.0/19 | 33,010 | 2026-09-07 11:43:13 |
| 64.104.124.0/24 | 32,960 | 2026-09-07 11:43:13 |
| 111.223.8.0/22 | 30,489 | 2026-09-07 12:06:05 |
| 128.107.54.0/23 | 29,129 | 2026-09-07 11:43:13 |
| 64.104.206.0/23 | 28,138 | 2026-09-07 11:43:13 |
| 64.104.192.0/18 | 27,940 | 2026-09-07 11:43:13 |
| 64.104.204.0/23 | 27,899 | 2026-09-07 11:43:13 |
| 64.104.64.0/19 | 25,297 | 2026-09-07 11:53:02 |
| 72.163.248.0/22 | 23,940 | 2026-09-07 10:43:19 |
| 128.107.18.0/23 | 23,581 | 2026-09-07 11:53:02 |
| 72.163.240.0/23 | 23,555 | 2026-09-07 10:43:19 |
| 173.39.96.0/19 | 23,537 | 2026-09-07 11:53:02 |
| 173.39.200.0/23 | 23,282 | 2026-09-07 10:43:19 |
| 66.187.208.0/20 | 22,490 | 2026-09-07 11:03:49 |
| 173.36.0.0/17 | 22,450 | 2026-09-07 10:14:21 |
| 173.37.145.0/24 | 22,424 | 2026-09-07 10:14:21 |
| 192.135.250.0/24 | 22,423 | 2026-09-07 10:14:38 |
| 173.37.128.0/19 | 22,401 | 2026-09-07 10:14:21 |
| 173.37.16.0/20 | 22,383 | 2026-09-07 10:14:21 |
| 128.107.4.0/23 | 22,360 | 2026-09-07 10:14:07 |
| 12.19.88.0/21 | 22,190 | 2026-09-07 10:42:21 |
| 128.107.22.0/23 | 21,104 | 2026-09-07 11:43:13 |
| 128.107.38.0/23 | 20,468 | 2026-09-07 10:19:18 |
| 128.107.6.0/23 | 20,454 | 2026-09-07 10:19:18 |
| 64.103.0.0/17 | 19,853 | 2026-09-07 12:06:04 |
| 128.107.10.0/23 | 19,421 | 2026-09-07 12:06:04 |
| 72.163.80.0/20 | 19,401 | 2026-09-07 10:42:21 |
| 144.254.0.0/16 | 19,217 | 2026-09-07 12:06:04 |
| 173.38.128.0/17 | 18,824 | 2026-09-07 12:06:04 |
| 216.128.32.0/19 | 16,738 | 2026-09-07 12:06:34 |
| 128.107.12.0/23 | 15,857 | 2026-09-07 12:09:50 |
| 12.159.148.0/22 | 15,518 | 2026-09-07 12:04:49 |
| 64.100.0.0/16 | 15,459 | 2026-09-07 10:43:11 |
| 192.118.76.0/22 | 15,454 | 2026-09-07 12:09:50 |
Showing top 50 of 93 announced prefixes by sample volume.
Frequently Asked Questions
What is AS109?
AS109 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 AS109 announce?
AS109 announces 1.14M IPv4 addresses distributed across 28 routed CIDR prefixes. The network is registered in United States.
Who operates AS109?
AS109 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 AS109 registered in?
AS109 is registered in United States. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
