Home Prefix Lookup165.225.0.0/17

165.225.0.0/17 - ZSCALER (AS22616)

IPv4ARINallocatedAS22616ZSCALER-SJC1 - ZSCALER, INC.No ROA

CIDR

165.225.0.0/17

IP Version

IPv4

Addresses

32.7K

Mask

/17 (255.255.128.0)

Country

🇺🇸 United States

City

Chicago

RIR

ARIN

Status

allocated

Allocated

2014-11-14

Announced BGP Routes

1 of 1 route

RPKI:

IRR:

Swipe sideways to see all columns →

Prefix	Origin AS	RPKI	IRR	Last Seen
165.225.0.0/17	AS22616 ZSCALER-SJC1 - ZSCALER, INC.	No ROA	Other IRR	2026-10-11

More-Specific Announcements

89 more-specific announcements

Prefix	Origin AS	RPKI	IRR	Last Seen
165.225.0.0/23	AS22616 ZSCALER-SJC1 - ZSCALER, INC.	Valid	-	2026-10-11
165.225.2.0/24	AS22616 ZSCALER-SJC1 - ZSCALER, INC.	Valid	-	2026-10-11
165.225.3.0/24	AS22616 ZSCALER-SJC1 - ZSCALER, INC.	Valid	-	2026-10-11
165.225.4.0/24	AS22616 ZSCALER-SJC1 - ZSCALER, INC.	Valid	-	2026-10-11
165.225.5.0/24	AS22616 ZSCALER-SJC1 - ZSCALER, INC.	Valid	-	2026-10-11
165.225.6.0/23	AS22616 ZSCALER-SJC1 - ZSCALER, INC.	Valid	-	2026-10-11
165.225.8.0/23	AS22616 ZSCALER-SJC1 - ZSCALER, INC.	Valid	-	2026-10-11
165.225.10.0/23	AS22616 ZSCALER-SJC1 - ZSCALER, INC.	Valid	-	2026-10-11
165.225.12.0/23	AS62044 ZSCALER-EMEA Zscaler Switzerland GmbH	Valid	-	2026-10-11
165.225.14.0/23	AS22616 ZSCALER-SJC1 - ZSCALER, INC.	Valid	-	2026-10-11
165.225.16.0/23	AS62044 ZSCALER-EMEA Zscaler Switzerland GmbH	Valid	-	2026-10-11
165.225.18.0/24	AS22616 ZSCALER-SJC1 - ZSCALER, INC.	Valid	-	2026-10-11
165.225.19.0/24	AS22616 ZSCALER-SJC1 - ZSCALER, INC.	Valid	-	2026-10-11
165.225.20.0/23	AS62044 ZSCALER-EMEA Zscaler Switzerland GmbH	Valid	-	2026-10-11
165.225.22.0/23	AS62044 ZSCALER-EMEA Zscaler Switzerland GmbH	Valid	-	2026-10-11
165.225.24.0/23	AS62044 ZSCALER-EMEA Zscaler Switzerland GmbH	Valid	-	2026-10-11
165.225.26.0/23	AS62044 ZSCALER-EMEA Zscaler Switzerland GmbH	Valid	-	2026-10-11
165.225.28.0/23	AS62044 ZSCALER-EMEA Zscaler Switzerland GmbH	Valid	-	2026-10-11
165.225.30.0/24	AS62044 ZSCALER-EMEA Zscaler Switzerland GmbH	Valid	-	2026-10-11
165.225.31.0/24	AS62044 ZSCALER-EMEA Zscaler Switzerland GmbH	Valid	-	2026-10-11
165.225.32.0/23	AS22616 ZSCALER-SJC1 - ZSCALER, INC.	Valid	-	2026-10-11
165.225.34.0/23	AS22616 ZSCALER-SJC1 - ZSCALER, INC.	Valid	-	2026-10-11
165.225.36.0/23	AS22616 ZSCALER-SJC1 - ZSCALER, INC.	Valid	-	2026-10-11
165.225.38.0/23	AS22616 ZSCALER-SJC1 - ZSCALER, INC.	Valid	-	2026-10-11
165.225.40.0/24	AS22616 ZSCALER-SJC1 - ZSCALER, INC.	Valid	-	2026-10-11
165.225.41.0/24	AS22616 ZSCALER-SJC1 - ZSCALER, INC.	Valid	-	2026-10-11
165.225.42.0/24	AS22616 ZSCALER-SJC1 - ZSCALER, INC.	Valid	-	2026-10-11
165.225.43.0/24	AS22616 ZSCALER-SJC1 - ZSCALER, INC.	Valid	-	2026-10-11
165.225.44.0/24	AS22616 ZSCALER-SJC1 - ZSCALER, INC.	Valid	-	2026-10-11
165.225.45.0/24	AS22616 ZSCALER-SJC1 - ZSCALER, INC.	Valid	-	2026-10-11
165.225.46.0/24	AS22616 ZSCALER-SJC1 - ZSCALER, INC.	Valid	-	2026-10-11
165.225.47.0/24	AS62044 ZSCALER-EMEA Zscaler Switzerland GmbH	Valid	-	2026-10-11
165.225.48.0/24	AS22616 ZSCALER-SJC1 - ZSCALER, INC.	Valid	-	2026-10-11
165.225.49.0/24	AS22616 ZSCALER-SJC1 - ZSCALER, INC.	Valid	-	2026-10-11
165.225.50.0/23	AS22616 ZSCALER-SJC1 - ZSCALER, INC.	Valid	-	2026-10-11
165.225.52.0/23	AS62044 ZSCALER-EMEA Zscaler Switzerland GmbH	Valid	-	2026-10-11
165.225.54.0/24	AS22616 ZSCALER-SJC1 - ZSCALER, INC.	Valid	-	2026-10-11
165.225.55.0/24	AS22616 ZSCALER-SJC1 - ZSCALER, INC.	Valid	-	2026-10-11
165.225.56.0/22	AS22616 ZSCALER-SJC1 - ZSCALER, INC.	Valid	-	2026-10-11
165.225.60.0/22	AS22616 ZSCALER-SJC1 - ZSCALER, INC.	Valid	-	2026-10-11
165.225.64.0/23	AS62044 ZSCALER-EMEA Zscaler Switzerland GmbH	Valid	-	2026-10-11
165.225.66.0/23	AS62044 ZSCALER-EMEA Zscaler Switzerland GmbH	Valid	-	2026-10-11
165.225.68.0/23	AS22616 ZSCALER-SJC1 - ZSCALER, INC.	No ROA	-	2026-10-11
165.225.70.0/24	AS62044 ZSCALER-EMEA Zscaler Switzerland GmbH	Valid	-	2026-10-11
165.225.71.0/24	AS62044 ZSCALER-EMEA Zscaler Switzerland GmbH	Valid	-	2026-10-11
165.225.72.0/22	AS62044 ZSCALER-EMEA Zscaler Switzerland GmbH	No ROA	-	2026-10-11
165.225.72.0/23	AS62044 ZSCALER-EMEA Zscaler Switzerland GmbH	Valid	-	2026-10-11
165.225.74.0/24	AS62044 ZSCALER-EMEA Zscaler Switzerland GmbH	Valid	-	2026-10-11
165.225.75.0/24	AS62044 ZSCALER-EMEA Zscaler Switzerland GmbH	Valid	-	2026-10-11
165.225.76.0/22	AS62044 ZSCALER-EMEA Zscaler Switzerland GmbH	No ROA	-	2026-10-11
165.225.76.0/23	AS62044 ZSCALER-EMEA Zscaler Switzerland GmbH	Valid	-	2026-10-11
165.225.76.0/24	AS62044 ZSCALER-EMEA Zscaler Switzerland GmbH	Valid	-	2026-10-11
165.225.78.0/24	AS62044 ZSCALER-EMEA Zscaler Switzerland GmbH	Valid	-	2026-10-11
165.225.79.0/24	AS62044 ZSCALER-EMEA Zscaler Switzerland GmbH	Valid	-	2026-10-11
165.225.80.0/23	AS62044 ZSCALER-EMEA Zscaler Switzerland GmbH	Valid	-	2026-10-11
165.225.82.0/24	AS62044 ZSCALER-EMEA Zscaler Switzerland GmbH	Valid	-	2026-10-11
165.225.83.0/24	AS22616 ZSCALER-SJC1 - ZSCALER, INC.	No ROA	-	2026-10-11
165.225.84.0/23	AS22616 ZSCALER-SJC1 - ZSCALER, INC.	Valid	-	2026-10-11
165.225.86.0/23	AS22616 ZSCALER-SJC1 - ZSCALER, INC.	Valid	-	2026-10-11
165.225.88.0/23	AS62044 ZSCALER-EMEA Zscaler Switzerland GmbH	Valid	-	2026-10-11
165.225.90.0/23	AS62044 ZSCALER-EMEA Zscaler Switzerland GmbH	Valid	-	2026-10-11
165.225.92.0/23	AS62044 ZSCALER-EMEA Zscaler Switzerland GmbH	Valid	-	2026-10-11
165.225.94.0/23	AS62044 ZSCALER-EMEA Zscaler Switzerland GmbH	Valid	-	2026-10-11
165.225.96.0/23	AS53813 ZSCALER-INC - ZSCALER, INC.	Valid	-	2026-10-11
165.225.98.0/24	AS22616 ZSCALER-SJC1 - ZSCALER, INC.	Valid	-	2026-10-11
165.225.99.0/24	AS22616 ZSCALER-SJC1 - ZSCALER, INC.	Valid	-	2026-10-11
165.225.100.0/24	AS16509 AMAZON-02 - Amazon.com, Inc.	Valid	-	2026-10-11
165.225.101.0/24	AS16509 AMAZON-02 - Amazon.com, Inc.	Valid	-	2026-10-11
165.225.102.0/24	AS53813 ZSCALER-INC - ZSCALER, INC.	Valid	-	2026-10-11
165.225.103.0/24	AS62044 ZSCALER-EMEA Zscaler Switzerland GmbH	Valid	-	2026-10-11
165.225.104.0/23	AS53813 ZSCALER-INC - ZSCALER, INC.	No ROA	-	2026-10-11
165.225.104.0/24	AS53813 ZSCALER-INC - ZSCALER, INC.	Valid	-	2026-10-11
165.225.105.0/24	AS53813 ZSCALER-INC - ZSCALER, INC.	Valid	-	2026-10-11
165.225.106.0/23	AS53813 ZSCALER-INC - ZSCALER, INC.	No ROA	-	2026-10-11
165.225.106.0/24	AS53813 ZSCALER-INC - ZSCALER, INC.	Valid	-	2026-10-11
165.225.107.0/24	AS53813 ZSCALER-INC - ZSCALER, INC.	Valid	-	2026-10-11
165.225.108.0/23	AS62044 ZSCALER-EMEA Zscaler Switzerland GmbH	Valid	-	2026-10-11
165.225.110.0/23	AS53813 ZSCALER-INC - ZSCALER, INC.	Valid	-	2026-10-11
165.225.112.0/23	AS53813 ZSCALER-INC - ZSCALER, INC.	Valid	-	2026-10-11
165.225.114.0/23	AS53813 ZSCALER-INC - ZSCALER, INC.	Valid	-	2026-10-11
165.225.114.0/24	AS53813 ZSCALER-INC - ZSCALER, INC.	Valid	-	2026-10-11
165.225.116.0/23	AS53813 ZSCALER-INC - ZSCALER, INC.	Valid	-	2026-10-11
165.225.118.0/24	AS53813 ZSCALER-INC - ZSCALER, INC.	Valid	-	2026-10-11
165.225.120.0/23	AS53813 ZSCALER-INC - ZSCALER, INC.	Valid	-	2026-10-11
165.225.120.0/24	AS53813 ZSCALER-INC - ZSCALER, INC.	Valid	-	2026-10-11
165.225.122.0/23	AS53813 ZSCALER-INC - ZSCALER, INC.	Valid	-	2026-10-11
165.225.124.0/23	AS53813 ZSCALER-INC - ZSCALER, INC.	Valid	-	2026-10-11
165.225.126.0/24	AS16509 AMAZON-02 - Amazon.com, Inc.	Valid	-	2026-10-11
165.225.127.0/24	AS62044 ZSCALER-EMEA Zscaler Switzerland GmbH	Valid	-	2026-10-11

IRR Route Objects

Origin	Registry	Maintainer	Modified
AS22616	Other IRR	MAINT-AS53444	2023-11-13

Transfer History

Registry transfers of 165.225.0.0/17, blocks inside it, or blocks containing it.

165.225.0.0/17Transfer · 2014-11-14
SEALED AIR CORPORATION
🇺🇸 US ARIN
→
ZSCALER, INC.
🇺🇸 US ARIN

Date	Resource	From	To	Type
2014-11-14	165.225.0.0/17	SEALED AIR CORPORATION 🇺🇸 US ARIN	ZSCALER, INC. 🇺🇸 US ARIN	Transfer

Origin ASN

AS22616

ZSCALER-SJC1 - ZSCALER, INC.

Related Prefixes

More prefixes of AS22616

All prefixes of AS22616 →

Geolocation

Country🇺🇸United StatesUS

CityChicago

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/165.225.0.0/17

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

curl -s "https://api.ipctl.io/v1/prefix/165.225.0.0/17" | jq

External Links

RIPEstat