Data as of Nov 12, 2026
137.31.158.0/24
No anonymizer space · no proxy exits in 30 daysZscaler, Inc. · space held by Zscaler Switzerland GmbH
Announcement
this exact prefix
RPKI valid
Announced by
Type
Corporate gateway
Risk
20 / 100 · Low
Recent change
New origin Jul 2026
its first announcement on record
Operators, sellers and brokers
Corporate gateways
| Name | Parent | In 137.31.158.0/24 | /24s |
|---|---|---|---|
| Zscaler | 256100% | 1 |
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 137.31.0.0/16 since Oct 2025 | AS22616 | Corporate gateway | 3 | Zscaler Switzerland GmbH |
Registrations in this block
The registry's network records over the announcement: those covering it, widest first, then every record inside it, under its parent.
| Range | Addresses | Netname | Holder | Type | Created | Abuse contact |
|---|---|---|---|---|---|---|
| 137.31.0.0/16 | 65,536 | Zscaler | Zscaler Switzerland GmbH (ORG-ZSG1-RIPE) · CH | LEGACY | Oct 15, 2025 | poc-abuse@ |
| └ 137.31.158.0/24 | 256 | ZSCALER-DALLAS-FORT-WORTH | Zscaler Dallas-Fort Worth | LEGACY | Aug 17, 2026 | poc-abuse@ via Zscaler |
A contact marked “via” is the registry's: the record names none of its own, so the registry hands down its parent's.
Network & registry
Registry
Holder
- Organization
- Zscaler Switzerland GmbH
- Handle
- ORG-ZSG1-RIPE
- Range
- 137.
31. 0. 0/ 16 - Registration type
- LEGACY
- Record created
- Oct 15, 2025
- Legacy
- yes
Origin network
AS22616
US
- Name
- Zscaler, Inc.
- Type
- Business
- Registered
- May 28, 2014
- Domain
- zscaler.com
- Website
- www.zscaler.com
- Industry
- Service
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Stable
- First seen
- Jul 2026
- Current origin since
- Jul 2026 · 3 mo
- Origin networks
- 1
Whois
Registration for this announcement
- Range
- 137.
31. 158. 0/ 24 - Netname
- ZSCALER-DALLAS-FORT-WORTH
- Registrant
- Zscaler Dallas-Fort Worth
- Registrant country
- US
- Organization
- Zscaler Dallas-Fort Worth
- Org country
- US
- Type
- LEGACY
- Created
- Aug 17, 2026
- Updated
- Aug 17, 2026
- Maintainer
- ZSCALER-RIPE-MNT
- RIR
- RIPE NCC
- Country
- CH
- Delegated
- Oct 17, 1989
- Status
- assigned
Report abuse
Abuse contact
- poc-abuse@
zscaler. com - Name
- Zscaler Abuse Desk
- Handle
- ZA1089-RIPE