206208 looking glass

AS53813 ZSCALER, INC. 🇺🇸 US

Announcing 398 prefixes, seen at the RIS collectors.

IPv4 prefixes
366
142,080 (555 × /24)
IPv6 prefixes
32
6,152 × /48
Upstreams
17
transit providers observed
Peers
10
settlement-free adjacencies
Downstreams
0
transit customers observed
Customer cone
0
ASes reachable through it

Registry and operator data

AS number
AS53813
Name
ZSCALER, INC.
Organisation
Zscaler AS53813
Country
🇺🇸 US
RIR
ARIN
Allocated
2011-06-03
Network type
Network Services
Scope
Regional
Peering policy
Open
IRR as-set
AS-ZSCALER-GLOBAL
Website
http://www.zscaler.com
PeeringDB
net/8683
Exchanges
32
Facilities
22

RPKI coverage of this AS

Its own announcements, validated against the current ROA set

387 valid (97.2%) 0 invalid (0.0%) 11 no ROA (2.8%)

Announcement history

One point per day, recorded at each table import

09218327536609-1809-2109-2409-2709-3010-0310-06
IPv4 IPv6

Recorded changes

New prefixes and origin changes seen on the live stream

WhenChangePrefixOriginPath
2026-10-01 19:50:41Z new prefix 175.107.174.0/23 AS53813 ZSCALER, INC. 204092207661299291453813
2026-10-01 19:50:41Z new prefix 175.107.176.0/23 AS53813 ZSCALER, INC. 204092207661299291453813
2026-10-01 19:50:41Z new prefix 175.107.178.0/23 AS53813 ZSCALER, INC. 204092207661299291453813
2026-10-01 16:55:41Z new prefix 2400:7aa0:2e00::/40 AS53813 ZSCALER, INC. 33336939291453813
2026-10-01 16:51:34Z new prefix 175.107.170.0/23 AS53813 ZSCALER, INC. 29504393923257291453813
2026-10-01 13:24:16Z new prefix 205.220.81.0/24 AS53813 ZSCALER, INC. 29504159359002291453813
2026-10-01 13:24:16Z new prefix 175.107.172.0/23 AS53813 ZSCALER, INC. 29504159359002291453813
2026-10-01 13:24:16Z new prefix 205.220.69.0/24 AS53813 ZSCALER, INC. 29504159359002291453813
2026-09-28 11:51:48Z new prefix 148.107.228.0/24 AS53813 ZSCALER, INC. 4913453356693953813
2026-09-23 19:01:26Z new prefix 137.31.209.0/24 AS53813 ZSCALER, INC. 1763953813
2026-09-23 14:09:54Z new prefix 167.103.128.0/23 AS53813 ZSCALER, INC. 443936407353813