Home Prefix Lookup163.129.0.0/16

163.129.0.0/16 - BGP Prefix

IPv4ARINallocated RPKI Valid

CIDR

163.129.0.0/16

IP Version

IPv4

Addresses

65.5K

Mask

/16 (255.255.0.0)

Country

🇺🇸 United States

City

San Jose (Tasman and Zanker)

RIR

ARIN

Status

allocated

Allocated

2022-01-11

Announced BGP Routes

0 of 0 routes

RPKI:

IRR:

Swipe sideways to see all columns →

Prefix	Origin AS	RPKI	IRR	Last Seen
This prefix is not announced as a whole. Parts of it are announced as more-specific prefixes, see below.

More-Specific Announcements

73 more-specific announcements

Prefix	Origin AS	RPKI	IRR	Last Seen
163.129.0.0/19	AS13445 WEBEX - Cisco Webex LLC	Valid	-	2026-10-11
163.129.32.0/22	AS13445 WEBEX - Cisco Webex LLC	Valid	-	2026-10-11
163.129.32.0/24	AS13445 WEBEX - Cisco Webex LLC	Valid	-	2026-10-11
163.129.33.0/24	AS13445 WEBEX - Cisco Webex LLC	Valid	-	2026-10-11
163.129.34.0/24	AS13445 WEBEX - Cisco Webex LLC	Valid	-	2026-10-11
163.129.35.0/24	AS13445 WEBEX - Cisco Webex LLC	Valid	-	2026-10-11
163.129.36.0/22	AS13445 WEBEX - Cisco Webex LLC	Valid	-	2026-10-11
163.129.40.0/21	AS13445 WEBEX - Cisco Webex LLC	Valid	-	2026-10-11
163.129.48.0/20	AS13445 WEBEX - Cisco Webex LLC	Valid	-	2026-10-11
163.129.64.0/20	AS13445 WEBEX - Cisco Webex LLC	Valid	-	2026-10-11
163.129.80.0/21	AS13445 WEBEX - Cisco Webex LLC	Valid	-	2026-10-11
163.129.128.0/24	AS16509 AMAZON-02 - Amazon.com, Inc.	Valid	-	2026-10-11
163.129.129.0/24	AS16509 AMAZON-02 - Amazon.com, Inc.	Valid	-	2026-10-11
163.129.130.0/24	AS16509 AMAZON-02 - Amazon.com, Inc.	Valid	-	2026-10-11
163.129.162.0/24	AS36692 CISCO-UMBRELLA - Cisco OpenDNS, LLC	Valid	-	2026-10-11
163.129.164.0/24	AS36692 CISCO-UMBRELLA - Cisco OpenDNS, LLC	Valid	-	2026-10-11
163.129.165.0/24	AS36692 CISCO-UMBRELLA - Cisco OpenDNS, LLC	Valid	-	2026-10-11
163.129.166.0/24	AS36692 CISCO-UMBRELLA - Cisco OpenDNS, LLC	Valid	-	2026-10-11
163.129.167.0/24	AS36692 CISCO-UMBRELLA - Cisco OpenDNS, LLC	Valid	-	2026-10-11
163.129.192.0/24	AS36692 CISCO-UMBRELLA - Cisco OpenDNS, LLC	Valid	-	2026-10-11
163.129.193.0/24	AS36692 CISCO-UMBRELLA - Cisco OpenDNS, LLC	Valid	-	2026-10-11
163.129.194.0/24	AS36692 CISCO-UMBRELLA - Cisco OpenDNS, LLC	Valid	-	2026-10-11
163.129.195.0/24	AS36692 CISCO-UMBRELLA - Cisco OpenDNS, LLC	Valid	-	2026-10-11
163.129.196.0/24	AS36692 CISCO-UMBRELLA - Cisco OpenDNS, LLC	Valid	-	2026-10-11
163.129.197.0/24	AS36692 CISCO-UMBRELLA - Cisco OpenDNS, LLC	Valid	-	2026-10-11
163.129.198.0/24	AS36692 CISCO-UMBRELLA - Cisco OpenDNS, LLC	Valid	-	2026-10-11
163.129.199.0/24	AS36692 CISCO-UMBRELLA - Cisco OpenDNS, LLC	Valid	-	2026-10-11
163.129.200.0/24	AS36692 CISCO-UMBRELLA - Cisco OpenDNS, LLC	Valid	-	2026-10-11
163.129.202.0/24	AS36692 CISCO-UMBRELLA - Cisco OpenDNS, LLC	Valid	-	2026-10-11
163.129.203.0/24	AS36692 CISCO-UMBRELLA - Cisco OpenDNS, LLC	Valid	-	2026-10-11
163.129.204.0/22	AS36692 CISCO-UMBRELLA - Cisco OpenDNS, LLC	Valid	-	2026-10-11
163.129.208.0/22	AS36692 CISCO-UMBRELLA - Cisco OpenDNS, LLC	Valid	-	2026-10-11
163.129.212.0/24	AS36692 CISCO-UMBRELLA - Cisco OpenDNS, LLC	Valid	-	2026-10-11
163.129.213.0/24	AS36692 CISCO-UMBRELLA - Cisco OpenDNS, LLC	Valid	-	2026-10-11
163.129.214.0/24	AS36692 CISCO-UMBRELLA - Cisco OpenDNS, LLC	Valid	-	2026-10-11
163.129.215.0/24	AS36692 CISCO-UMBRELLA - Cisco OpenDNS, LLC	Valid	-	2026-10-11
163.129.216.0/24	AS36692 CISCO-UMBRELLA - Cisco OpenDNS, LLC	Valid	-	2026-10-11
163.129.217.0/24	AS36692 CISCO-UMBRELLA - Cisco OpenDNS, LLC	Valid	-	2026-10-11
163.129.220.0/24	AS36692 CISCO-UMBRELLA - Cisco OpenDNS, LLC	Valid	-	2026-10-11
163.129.221.0/24	AS36692 CISCO-UMBRELLA - Cisco OpenDNS, LLC	Valid	-	2026-10-11
163.129.222.0/24	AS36692 CISCO-UMBRELLA - Cisco OpenDNS, LLC	Valid	-	2026-10-11
163.129.223.0/24	AS36692 CISCO-UMBRELLA - Cisco OpenDNS, LLC	Valid	-	2026-10-11
163.129.224.0/24	AS36692 CISCO-UMBRELLA - Cisco OpenDNS, LLC	Valid	-	2026-10-11
163.129.225.0/24	AS36692 CISCO-UMBRELLA - Cisco OpenDNS, LLC	Valid	-	2026-10-11
163.129.226.0/24	AS36692 CISCO-UMBRELLA - Cisco OpenDNS, LLC	Valid	-	2026-10-11
163.129.227.0/24	AS36692 CISCO-UMBRELLA - Cisco OpenDNS, LLC	Valid	-	2026-10-11
163.129.228.0/24	AS36692 CISCO-UMBRELLA - Cisco OpenDNS, LLC	Valid	-	2026-10-11
163.129.229.0/24	AS36692 CISCO-UMBRELLA - Cisco OpenDNS, LLC	Valid	-	2026-10-11
163.129.230.0/24	AS36692 CISCO-UMBRELLA - Cisco OpenDNS, LLC	Valid	-	2026-10-11
163.129.231.0/24	AS36692 CISCO-UMBRELLA - Cisco OpenDNS, LLC	Valid	-	2026-10-11
163.129.232.0/24	AS36692 CISCO-UMBRELLA - Cisco OpenDNS, LLC	Valid	-	2026-10-11
163.129.233.0/24	AS36692 CISCO-UMBRELLA - Cisco OpenDNS, LLC	Valid	-	2026-10-11
163.129.234.0/24	AS36692 CISCO-UMBRELLA - Cisco OpenDNS, LLC	Valid	-	2026-10-11
163.129.235.0/24	AS36692 CISCO-UMBRELLA - Cisco OpenDNS, LLC	Valid	-	2026-10-11
163.129.236.0/24	AS36692 CISCO-UMBRELLA - Cisco OpenDNS, LLC	Valid	-	2026-10-11
163.129.237.0/24	AS36692 CISCO-UMBRELLA - Cisco OpenDNS, LLC	Valid	-	2026-10-11
163.129.238.0/24	AS36692 CISCO-UMBRELLA - Cisco OpenDNS, LLC	Valid	-	2026-10-11
163.129.239.0/24	AS36692 CISCO-UMBRELLA - Cisco OpenDNS, LLC	Valid	-	2026-10-11
163.129.240.0/24	AS36692 CISCO-UMBRELLA - Cisco OpenDNS, LLC	Valid	-	2026-10-11
163.129.241.0/24	AS36692 CISCO-UMBRELLA - Cisco OpenDNS, LLC	Valid	-	2026-10-11
163.129.242.0/24	AS36692 CISCO-UMBRELLA - Cisco OpenDNS, LLC	Valid	-	2026-10-11
163.129.243.0/24	AS36692 CISCO-UMBRELLA - Cisco OpenDNS, LLC	Valid	-	2026-10-11
163.129.244.0/24	AS36692 CISCO-UMBRELLA - Cisco OpenDNS, LLC	Valid	-	2026-10-11
163.129.245.0/24	AS36692 CISCO-UMBRELLA - Cisco OpenDNS, LLC	Valid	-	2026-10-11
163.129.246.0/24	AS36692 CISCO-UMBRELLA - Cisco OpenDNS, LLC	Valid	-	2026-10-11
163.129.247.0/24	AS36692 CISCO-UMBRELLA - Cisco OpenDNS, LLC	Valid	-	2026-10-11
163.129.248.0/24	AS36692 CISCO-UMBRELLA - Cisco OpenDNS, LLC	Valid	-	2026-10-11
163.129.249.0/24	AS36692 CISCO-UMBRELLA - Cisco OpenDNS, LLC	Valid	-	2026-10-11
163.129.250.0/24	AS36692 CISCO-UMBRELLA - Cisco OpenDNS, LLC	Valid	-	2026-10-11
163.129.251.0/24	AS36692 CISCO-UMBRELLA - Cisco OpenDNS, LLC	Valid	-	2026-10-11
163.129.252.0/24	AS36692 CISCO-UMBRELLA - Cisco OpenDNS, LLC	Valid	-	2026-10-11
163.129.253.0/24	AS36692 CISCO-UMBRELLA - Cisco OpenDNS, LLC	Valid	-	2026-10-11
163.129.255.0/24	AS36692 CISCO-UMBRELLA - Cisco OpenDNS, LLC	Valid	-	2026-10-11

Transfer History

Registry transfers of 163.129.0.0/16, blocks inside it, or blocks containing it.

163.129.0.0/16Transfer · 2022-01-11
Community College of Allegheny County
🇺🇸 US ARIN
→
Cisco Webex LLC
🇺🇸 US ARIN

Date	Resource	From	To	Type
2022-01-11	163.129.0.0/16	Community College of Allegheny County 🇺🇸 US ARIN	Cisco Webex LLC 🇺🇸 US ARIN	Transfer

Geolocation

Country🇺🇸United StatesUS

RegionCalifornia

CitySan Jose (Tasman and Zanker)

Coordinates37.4084, -121.9540 ↗

Learn more

RPKI and ROAs explainedWhat RPKI valid, invalid and no ROA mean
RPKI validatorCheck ROA coverage for any prefix or ASN
What is BGP?How prefixes are announced and routed
More-specific prefixesGlossary: covering and more-specific routes
IPv4 transfers in the ARIN regionWho bought and sold address space recently

API

Open

GEThttps://api.ipctl.io/v1/prefix/163.129.0.0/16

Returns prefix allocation, BGP routes, and more-specific subnets.

curl -s "https://api.ipctl.io/v1/prefix/163.129.0.0/16" | jq

External Links

RIPEstat