Autonomous System

AS109

CISCO SYSTEMS, INC.

CISCO SYSTEMS, INC. United States 🌐 cisco.com

Announced IPs

1,141,504

CIDR prefixes

ASN

AS109

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.

69/100

Moderate

How this score is built

Baseline (neutral) 65
Enterprise allocation +4
Trust score 69 / 100

Experimental · trust-vectors model v1.1.0 — 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.

Founded

1984

Headquarters

San Jose

Industry

telecommunications

Employees

66,639

Official website ↗ Summary from Wikipedia, CC BY-SA 4.0 · Data from Wikidata

Network profile

Source: PeeringDB →

Network type Enterprise

Geographic scope Global

Traffic ratio Balanced

Peering policy Selective

IRR record AS-CISCO

Website ↗

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.

View on 3D globe →

Top CIDR ranges

CIDR	IPs	PTR Density	Organization	Country	State	City
64.100.0.0/14	262.1K	6.3%	CISCO SYSTEMS, INC.	US	North Carolina	Morrisville
171.68.0.0/14	262.1K	2.5%	CISCO SYSTEMS, INC.	US	California	San Jose
64.100.0.0/15	131.1K	0.0%	—	US	North Carolina	Morrisville
173.36.0.0/15	131.1K	9.0%	CISCO SYSTEMS, INC.	US	Texas	Allen
64.102.0.0/16	65.5K	0.0%	—	US	North Carolina	Morrisville
64.104.0.0/16	65.5K	6.2%	CISCO SYSTEMS, INC.	US	—	—
72.163.0.0/16	65.5K	14.7%	CISCO SYSTEMS, INC.	US	Texas	Richardson
128.107.0.0/16	65.5K	4.2%	CISCO SYSTEMS, INC.	US	California	San Jose
144.254.0.0/16	65.5K	6.9%	CISCO SYSTEMS, INC.	US	—	—
161.44.0.0/16	65.5K	2.9%	CISCO SYSTEMS, INC.	US	North Carolina	Morrisville
173.38.0.0/16	65.5K	12.6%	CISCO SYSTEMS, INC.	US	North Carolina	Morrisville
64.103.128.0/17	32.8K	0.0%	—	IN	Karnataka	Bengaluru
72.163.0.0/17	32.8K	0.0%	—	US	Texas	Richardson
128.107.128.0/17	32.8K	0.0%	—	US	California	San Jose
173.38.0.0/17	32.8K	0.0%	—	US	North Carolina	Morrisville
173.38.128.0/17	32.8K	0.0%	—	NL	Flevoland	Almere Stad
173.39.0.0/17	32.8K	7.1%	CISCO SYSTEMS, INC.	US	—	—
64.104.0.0/18	16.4K	0.0%	—	JP	Tokyo	Tokyo
64.104.192.0/18	16.4K	0.0%	—	AU	New South Wales	St Leonards
72.163.128.0/18	16.4K	0.0%	—	IN	Karnataka	Bengaluru
128.107.64.0/18	16.4K	0.0%	—	US	—	—
173.39.0.0/18	16.4K	0.0%	—	IN	Karnataka	Bengaluru
173.39.128.0/18	16.4K	0.1%	CISCO SYSTEMS, INC.	US	California	San Jose
64.103.0.0/19	8.2K	0.0%	—	NL	Flevoland	Almere Stad
64.103.64.0/19	8.2K	0.0%	—	GB	England	City of London
64.104.96.0/19	8.2K	0.0%	—	JP	—	—
64.104.128.0/19	8.2K	0.0%	—	IN	Karnataka	Bengaluru
64.104.160.0/19	8.2K	0.0%	—	JP	—	—
72.163.192.0/19	8.2K	0.0%	—	IN	Karnataka	Bengaluru
128.107.32.0/19	8.2K	0.0%	—	US	—	—
173.39.64.0/19	8.2K	0.0%	—	IN	Karnataka	Bengaluru
173.39.192.0/19	8.2K	0.7%	CISCO SYSTEMS, INC.	US	California	San Jose
192.133.192.0/19	8.2K	0.0%	CISCO SYSTEMS, INC.	US	North Carolina	Morrisville
216.128.32.0/19	8.2K	0.0%	CISCO SYSTEMS, INC.	US	—	—
64.103.48.0/20	4.1K	0.0%	—	NL	Flevoland	Almere Stad
64.103.96.0/20	4.1K	0.0%	—	GB	England	City of London
64.104.64.0/20	4.1K	0.0%	—	US	—	—
66.187.208.0/20	4.1K	0.0%	CISCO SYSTEMS, INC.	US	Texas	Allen
72.163.224.0/20	4.1K	0.0%	—	JP	—	—
173.39.96.0/20	4.1K	0.0%	—	US	California	San Jose
173.39.208.0/20	4.1K	0.0%	—	US	—	—
192.133.224.0/20	4.1K	0.0%	CISCO SYSTEMS, INC.	US	North Carolina	Morrisville
12.19.88.0/21	2.0K	0.0%	CISCO SYSTEMS, INC.	US	Texas	Richardson
64.103.32.0/21	2.0K	0.0%	—	NL	Flevoland	Almere Stad
64.103.40.0/21	2.0K	0.0%	—	GB	England	City of London
64.103.120.0/21	2.0K	0.0%	—	US	—	—
64.104.80.0/21	2.0K	0.0%	—	US	—	—
128.107.0.0/21	2.0K	0.0%	—	US	—	—
173.39.192.0/21	2.0K	0.0%	—	JP	—	—
198.135.0.0/21	2.0K	3.0%	CISCO SYSTEMS, INC.	US	North Carolina	Morrisville
12.159.148.0/22	1.0K	1.0%	CISCO SYSTEMS, INC.	US	North Carolina	Morrisville
64.103.112.0/22	1.0K	0.0%	—	US	—	—
64.104.92.0/22	1.0K	0.0%	—	US	—	—
72.163.244.0/22	1.0K	0.0%	—	JP	—	—
72.163.248.0/22	1.0K	0.0%	—	CN	—	—
72.163.252.0/22	1.0K	0.0%	—	JP	—	—
103.60.32.0/22	1.0K	0.0%	CISCO SYSTEMS, INC.	CN	Shanghai	Shanghai
111.223.8.0/22	1.0K	0.0%	CISCO SYSTEMS, INC.	CN	Shanghai	Shanghai
128.107.28.0/22	1.0K	0.0%	—	US	—	—
173.39.124.0/22	1.0K	0.0%	—	SG	—	—
173.39.204.0/22	1.0K	0.0%	—	US	—	—
192.118.76.0/22	1.0K	0.0%	CISCO SYSTEMS, INC.	IL	Central District	Netanya
192.133.240.0/22	1.0K	0.0%	CISCO SYSTEMS, INC.	US	North Carolina	Morrisville
12.5.186.0/23	512	0.0%	CISCO SYSTEMS, INC.	US	Texas	Richardson
64.103.118.0/23	512	0.0%	—	US	—	—
64.104.90.0/23	512	0.0%	—	US	—	—
72.163.240.0/23	512	0.0%	—	CN	—	—
72.163.242.0/23	512	0.0%	—	JP	—	—
128.107.8.0/23	512	0.0%	—	GB	—	—
128.107.10.0/23	512	0.0%	—	NL	—	—
128.107.12.0/23	512	0.0%	—	IL	—	—
128.107.14.0/23	512	0.0%	—	IN	—	—
128.107.16.0/23	512	0.0%	—	US	—	—
128.107.20.0/23	512	0.0%	—	JP	—	—
128.107.22.0/23	512	0.0%	—	AU	—	—
128.107.24.0/23	512	0.0%	—	CN	—	—
128.107.26.0/23	512	0.0%	—	US	—	—
173.39.112.0/23	512	0.0%	—	SG	—	—
173.39.114.0/23	512	0.0%	—	US	—	—
173.39.116.0/23	512	0.0%	—	SG	—	—
173.39.120.0/23	512	0.0%	—	SG	—	—
173.39.200.0/23	512	0.0%	—	CN	—	—
173.39.202.0/23	512	0.0%	—	US	—	—
204.69.198.0/23	512	19.1%	CISCO SYSTEMS, INC.	US	California	San Jose
64.103.116.0/24	256	0.0%	—	IL	—	—
64.103.117.0/24	256	0.0%	—	US	—	—
64.104.88.0/24	256	0.0%	—	SG	—	—
64.104.89.0/24	256	0.0%	—	US	—	—
128.107.18.0/24	256	0.0%	—	SG	—	—
128.107.19.0/24	256	0.0%	—	US	—	—
173.39.118.0/24	256	0.0%	—	US	—	—
173.39.119.0/24	256	0.0%	—	SG	—	—
173.39.122.0/24	256	0.0%	—	US	—	—
173.39.123.0/24	256	0.0%	—	SG	—	—
192.135.250.0/24	256	1.6%	CISCO SYSTEMS, INC.	US	Texas	Allen
198.133.219.0/24	256	48.0%	CISCO SYSTEMS, INC.	US	California	San Jose
204.69.200.0/24	256	0.0%	CISCO SYSTEMS, INC.	US	California	San Jose

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	77,602	2026-07-18 10:54:40
64.104.128.0/19	75,531	2026-07-18 10:54:40
64.103.128.0/17	75,433	2026-07-18 10:54:40
72.163.128.0/18	74,934	2026-07-18 10:54:40
173.39.64.0/19	53,153	2026-07-18 10:54:40
173.39.0.0/18	52,633	2026-07-18 10:54:40
128.107.14.0/23	51,352	2026-07-18 10:54:40
72.163.248.0/22	15,893	2026-07-18 10:52:17
111.223.8.0/22	15,877	2026-07-18 10:52:17
72.163.240.0/23	15,721	2026-07-18 10:52:17
173.39.200.0/23	15,563	2026-07-18 10:52:51
128.107.54.0/23	15,082	2026-07-18 10:54:40
64.104.206.0/23	14,527	2026-07-18 10:54:40
64.104.204.0/23	14,490	2026-07-18 10:54:40
64.104.192.0/18	14,490	2026-07-18 10:54:40
173.39.152.0/21	14,015	2026-07-18 11:25:39
173.39.144.0/21	13,932	2026-07-18 11:25:39
128.107.20.0/23	13,831	2026-07-18 11:25:39
173.39.160.0/19	13,820	2026-07-18 11:25:39
173.39.128.0/19	13,798	2026-07-18 11:25:39
173.39.192.0/20	13,774	2026-07-18 11:25:39
72.163.224.0/19	13,532	2026-07-18 11:25:39
64.104.0.0/18	13,412	2026-07-18 11:25:39
64.104.96.0/19	13,400	2026-07-18 11:25:39
64.104.160.0/19	13,313	2026-07-18 11:25:39
64.104.124.0/24	13,265	2026-07-18 11:25:39
128.107.38.0/23	12,555	2026-07-18 10:52:36
128.107.6.0/23	12,532	2026-07-18 10:52:36
173.39.96.0/19	12,151	2026-07-18 10:54:40
128.107.18.0/23	12,025	2026-07-18 10:54:40
64.104.64.0/19	11,595	2026-07-18 10:54:40
66.187.208.0/20	11,231	2026-07-18 10:52:18
173.36.0.0/17	11,205	2026-07-18 10:52:53
173.37.128.0/19	11,146	2026-07-18 10:52:53
192.135.250.0/24	11,139	2026-07-18 10:52:53
173.37.16.0/20	11,138	2026-07-18 10:52:53
128.107.4.0/23	11,120	2026-07-18 10:52:53
173.37.145.0/24	11,118	2026-07-18 10:52:53
12.19.88.0/21	11,038	2026-07-18 10:52:18
128.107.22.0/23	10,124	2026-07-18 10:54:40
72.163.80.0/20	8,503	2026-07-18 10:52:20
128.107.12.0/23	7,805	2026-07-18 10:52:39
192.118.76.0/22	7,611	2026-07-18 10:52:39
103.60.32.0/22	7,229	2026-07-18 10:52:17
64.103.96.0/20	5,843	2026-07-18 10:52:03
64.103.64.0/19	5,800	2026-07-18 10:52:03
64.103.40.0/21	5,794	2026-07-18 10:52:03
64.103.48.0/21	5,743	2026-07-18 10:52:03
128.107.8.0/23	5,688	2026-07-18 10:52:32
128.107.40.0/23	5,683	2026-07-18 10:52:32

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.

Last updated: 2026-07-18 11:25:31 UTC