AS109 · US — CISCO SYSTEMS, INC.

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CISCOSYSTEMS · ARIN · US

Identity source

AS109 ·

US CISCO SYSTEMS, INC.

NRO allocation data

96IPv4 prefixes

46IPv6 prefixes

15Observed neighbors

RPKIValid: 138 Invalid: 0 Not found: 4 Unknown: 0

Selected local snapshot coverage; not the whole Internet. BGP snapshots: ris-rrc00 11 Oct 00:00 UTC; routeviews2 11 Oct 04:00 UTC; routeviews6 11 Oct 04:00 UTC. Validator: 11 Oct 05:43 UTC. Publication-point issues: 90

Address space details

Overlapping originated prefixes counted once. IPv4 addresses: 1,149,696

IPv6 addresses: 79228162514264337593543950336

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Observed originated prefixes

These are observed BGP origins, not an inventory of registered allocations or transit reachability.

96 matching prefix–origin pairs. Each pair appears once; source observations are in Details.

Prefix	RPKI	Last observed	Details
12.5.186.0/23	Not Found	11 Oct 04:00 UTC	2 source observations ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI not_found routeviews2 · 2026-10-11T04:00:00+00:00 · 1 selected peers · RPKI not_found
12.19.88.0/21	Not Found	11 Oct 04:00 UTC	2 source observations ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI not_found routeviews2 · 2026-10-11T04:00:00+00:00 · 1 selected peers · RPKI not_found
12.159.148.0/22	Valid	11 Oct 04:00 UTC	2 source observations ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI valid routeviews2 · 2026-10-11T04:00:00+00:00 · 1 selected peers · RPKI valid
64.100.0.0/16	Valid	11 Oct 04:00 UTC	2 source observations ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI valid routeviews2 · 2026-10-11T04:00:00+00:00 · 1 selected peers · RPKI valid
64.101.0.0/18	Valid	11 Oct 04:00 UTC	2 source observations ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI valid routeviews2 · 2026-10-11T04:00:00+00:00 · 1 selected peers · RPKI valid
64.101.64.0/18	Valid	11 Oct 04:00 UTC	2 source observations ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI valid routeviews2 · 2026-10-11T04:00:00+00:00 · 1 selected peers · RPKI valid
64.101.96.0/19	Valid	11 Oct 04:00 UTC	2 source observations ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI valid routeviews2 · 2026-10-11T04:00:00+00:00 · 1 selected peers · RPKI valid
64.101.128.0/18	Valid	11 Oct 04:00 UTC	2 source observations ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI valid routeviews2 · 2026-10-11T04:00:00+00:00 · 1 selected peers · RPKI valid
64.101.192.0/19	Valid	11 Oct 04:00 UTC	2 source observations ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI valid routeviews2 · 2026-10-11T04:00:00+00:00 · 1 selected peers · RPKI valid
64.101.224.0/19	Valid	11 Oct 04:00 UTC	2 source observations ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI valid routeviews2 · 2026-10-11T04:00:00+00:00 · 1 selected peers · RPKI valid
64.102.0.0/16	Valid	11 Oct 04:00 UTC	2 source observations ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI valid routeviews2 · 2026-10-11T04:00:00+00:00 · 1 selected peers · RPKI valid
64.102.249.0/24	Valid	11 Oct 04:00 UTC	2 source observations ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI valid routeviews2 · 2026-10-11T04:00:00+00:00 · 1 selected peers · RPKI valid
64.103.0.0/16	Valid	11 Oct 04:00 UTC	2 source observations ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI valid routeviews2 · 2026-10-11T04:00:00+00:00 · 1 selected peers · RPKI valid
64.103.0.0/17	Valid	11 Oct 04:00 UTC	2 source observations ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI valid routeviews2 · 2026-10-11T04:00:00+00:00 · 1 selected peers · RPKI valid
64.103.40.0/21	Valid	11 Oct 04:00 UTC	2 source observations ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI valid routeviews2 · 2026-10-11T04:00:00+00:00 · 1 selected peers · RPKI valid
64.103.48.0/21	Valid	11 Oct 04:00 UTC	2 source observations ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI valid routeviews2 · 2026-10-11T04:00:00+00:00 · 1 selected peers · RPKI valid
64.103.64.0/19	Valid	11 Oct 04:00 UTC	2 source observations ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI valid routeviews2 · 2026-10-11T04:00:00+00:00 · 1 selected peers · RPKI valid
64.103.96.0/20	Valid	11 Oct 04:00 UTC	2 source observations ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI valid routeviews2 · 2026-10-11T04:00:00+00:00 · 1 selected peers · RPKI valid
64.103.128.0/17	Valid	11 Oct 04:00 UTC	2 source observations ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI valid routeviews2 · 2026-10-11T04:00:00+00:00 · 1 selected peers · RPKI valid
64.104.0.0/16	Valid	11 Oct 04:00 UTC	2 source observations ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI valid routeviews2 · 2026-10-11T04:00:00+00:00 · 1 selected peers · RPKI valid
64.104.0.0/18	Valid	11 Oct 04:00 UTC	2 source observations ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI valid routeviews2 · 2026-10-11T04:00:00+00:00 · 1 selected peers · RPKI valid
64.104.64.0/19	Valid	11 Oct 04:00 UTC	2 source observations ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI valid routeviews2 · 2026-10-11T04:00:00+00:00 · 1 selected peers · RPKI valid
64.104.96.0/19	Valid	11 Oct 04:00 UTC	2 source observations ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI valid routeviews2 · 2026-10-11T04:00:00+00:00 · 1 selected peers · RPKI valid
64.104.124.0/24	Valid	11 Oct 04:00 UTC	2 source observations ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI valid routeviews2 · 2026-10-11T04:00:00+00:00 · 1 selected peers · RPKI valid
64.104.128.0/19	Valid	11 Oct 04:00 UTC	2 source observations ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI valid routeviews2 · 2026-10-11T04:00:00+00:00 · 1 selected peers · RPKI valid

Next rows

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Observed AS neighbors

15 unique neighbors in the selected local snapshots. This is the available collector dataset, not a complete map of the Internet. Adjacency does not establish upstream service or peering.

15 matching neighbors · 1–15 shown

Network	IPv4/IPv6	Seen in	Last observed	Details
AS701 · US Verizon Business	IPv4	ris-rrc00, routeviews2	11 Oct 04:00 UTC	Source observations ris-rrc00 · IPv4 · 11 Oct 00:00 UTC routeviews2 · IPv4 · 11 Oct 04:00 UTC
AS1221 · AU ASN-TELSTRA Telstra Limited	IPv4	ris-rrc00, routeviews2	11 Oct 04:00 UTC	Source observations ris-rrc00 · IPv4 · 11 Oct 00:00 UTC routeviews2 · IPv4 · 11 Oct 04:00 UTC
AS1299 · SE TWELVE99 Arelion Sweden AB	IPv4	ris-rrc00	11 Oct 00:00 UTC	Source observations ris-rrc00 · IPv4 · 11 Oct 00:00 UTC
AS1680 · IL NV-ASN CELLCOM ltd.	IPv4	ris-rrc00	11 Oct 00:00 UTC	Source observations ris-rrc00 · IPv4 · 11 Oct 00:00 UTC
AS2764 · AU AAPT AAPT Limited	IPv4	ris-rrc00	11 Oct 00:00 UTC	Source observations ris-rrc00 · IPv4 · 11 Oct 00:00 UTC
AS3356 · US Level 3 Parent, LLC	IPv4	ris-rrc00, routeviews2	11 Oct 04:00 UTC	Source observations ris-rrc00 · IPv4 · 11 Oct 00:00 UTC routeviews2 · IPv4 · 11 Oct 04:00 UTC
AS3491 · HK PCCWG-APAC-HK PCCW Global HK Ltd.	IPv4	ris-rrc00, routeviews2	11 Oct 04:00 UTC	Source observations ris-rrc00 · IPv4 · 11 Oct 00:00 UTC routeviews2 · IPv4 · 11 Oct 04:00 UTC
AS4657 · SG Starhub Ltd.	IPv4	ris-rrc00	11 Oct 00:00 UTC	Source observations ris-rrc00 · IPv4 · 11 Oct 00:00 UTC
AS4812 · CN CHINANET-SH-AP	IPv4	ris-rrc00, routeviews2	11 Oct 04:00 UTC	Source observations ris-rrc00 · IPv4 · 11 Oct 00:00 UTC routeviews2 · IPv4 · 11 Oct 04:00 UTC
AS6939 · US Hurricane Electric LLC	IPv4	ris-rrc00, routeviews2	11 Oct 04:00 UTC	Source observations ris-rrc00 · IPv4 · 11 Oct 00:00 UTC routeviews2 · IPv4 · 11 Oct 04:00 UTC
AS7018 · US AT&T Enterprises, LLC	IPv4	ris-rrc00	11 Oct 00:00 UTC	Source observations ris-rrc00 · IPv4 · 11 Oct 00:00 UTC
AS7473 · SG SINGTEL-AS-AP Singapore Telecommunications Ltd	IPv4	routeviews2	11 Oct 04:00 UTC	Source observations routeviews2 · IPv4 · 11 Oct 04:00 UTC
AS8551 · IL BEZEQ-INTERNATIONAL-AS Bezeq International Ltd.	IPv4	ris-rrc00, routeviews2	11 Oct 04:00 UTC	Source observations ris-rrc00 · IPv4 · 11 Oct 00:00 UTC routeviews2 · IPv4 · 11 Oct 04:00 UTC
AS9498 · IN BBIL-AP BHARTI Airtel Ltd.	IPv4	ris-rrc00, routeviews2	11 Oct 04:00 UTC	Source observations ris-rrc00 · IPv4 · 11 Oct 00:00 UTC routeviews2 · IPv4 · 11 Oct 04:00 UTC
AS17621 · CN CNCGROUP-SH	IPv4	ris-rrc00, routeviews2	11 Oct 04:00 UTC	Source observations ris-rrc00 · IPv4 · 11 Oct 00:00 UTC routeviews2 · IPv4 · 11 Oct 04:00 UTC

Clear neighbor filters

View observed neighbor graph (up to 15 AS nodes)

Lines mean observed adjacency, with no commercial direction inferred. The table above provides the same evidence and source times.

Showing 14 of 15 matching neighbors, in table sort order, independent of table page.

Peering & locations

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Registry information

ARIN · fetched 10 Oct 21:05 UTC

Resource name: CISCOSYSTEMS
Handle: AS109
RDAP country: Not supplied
ASN: 109

Registered organizations

CISCO SYSTEMS, INC.

Last Changed: 12 Sep 2023 19:59 UTC

Registration: 06 May 1987 04:00 UTC

Registry source

Allocation statistics

NRO/RIR delegated-extended records describe allocation or assignment ranges. They do not prove a BGP announcement or replace more-specific RDAP registration information. Country is the allocation record’s registration country, not the physical location of every address.

AS109–AS109 · arin · assigned · ASN allocation country: US · Allocation date: 1987-05-06 — NRO/RIR data · snapshot 10 Oct 00:00 UTC

NRO data and format

Prefix count history

Local observation changes

Only comparable successful snapshots are compared. First imports, changed peer coverage and collection gaps are baselines, not new global routes or withdrawals. RPKI transition history is not available before it has been recorded.

No retained changes are available for this resource.

Retained local prefix-count observations

Separate collector series. Missing rows are not zero. Peer-set changes are separate coverage, not a continuous trend.

Source	Snapshot	Family	Prefixes	Peer coverage
routeviews2	11 Oct 04:00 UTC	IPv4	96	140.192.8.16/IPv4
routeviews6	11 Oct 04:00 UTC	IPv6	46	2406:840:feed:2::1/IPv6
routeviews2	11 Oct 02:00 UTC	IPv4	96	140.192.8.16/IPv4
routeviews6	11 Oct 02:00 UTC	IPv6	46	2406:840:feed:2::1/IPv6
ris-rrc00	11 Oct 00:00 UTC	IPv4	96	2a00:5884::6/IPv6, 89.234.186.6/IPv4
ris-rrc00	11 Oct 00:00 UTC	IPv6	46	2a00:5884::6/IPv6, 89.234.186.6/IPv4
ris-rrc00	10 Oct 16:00 UTC	IPv4	96	2a00:5884::6/IPv6, 89.234.186.6/IPv4
ris-rrc00	10 Oct 16:00 UTC	IPv6	46	2a00:5884::6/IPv6, 89.234.186.6/IPv4