Data as of Nov 13, 2026
209.55.211.0/24
No anonymizer space · no proxy exits in 30 daysZscaler, Inc.
Operators, sellers and brokers
Corporate gateways
| Name | Parent | In 209.55.211.0/24 | /24s |
|---|---|---|---|
| Zscaler | 256100% | 1 |
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 209.55.192.0/19 since Sep 2021 | AS22616 | Corporate gateway | Zscaler, Inc. |
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 |
|---|---|---|---|---|---|---|
| 209. | 24,576 | ZSCAL | Zscaler, Inc. (ZSCAL) · US | Direct Allocation | Sep 21, 2021 | poc-abuse@ |
| └ 209.55.211.0/24 | 256 | ZSCALER-SIN5 | Zscaler, Inc. (C11068495) · SG | Reassigned | Jan 14, 2025 | poc-abuse@ via ZSCAL |
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, Inc.
- Handle
- ZSCAL
- Range
- 209.
55. 128. 0 - 209. 55. 223. 255 - Registration type
- Direct Allocation
- Record created
- Sep 21, 2021
Origin network
AS53813
US
- Name
- Zscaler, Inc.
- Type
- Business
- Registered
- Jun 3, 2011
- 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
- Feb 2025
- Current origin since
- Feb 2025 · 1.8 yr
- Origin networks
- 1
Whois
Registration for this announcement
- Range
- 209.
55. 211. 0/ 24 - Netname
- ZSCALER-SIN5
- Registrant
- Zscaler, Inc.
- Organization
- Zscaler, Inc. (C11068495)
- Type
- Reassigned
- Handle
- NET-209-55-211-0-1
- Parent
- NET-209-55-128-0-1
- Created
- Jan 14, 2025
- RIR
- ARIN
- Country
- US
- Delegated
- Sep 21, 2021
- Status
- assigned
Report abuse
Abuse contact
- poc-abuse@
zscaler. com - Name
- poc-abuse
- Phone
- +1-408-701-0534
- Handle
- POCAB2-ARIN