Data as of Nov 8, 2026
209.55.128.0/18
No anonymizer space · no proxy exits in 30 daysZscaler, Inc.
Operators, sellers and brokers
Corporate gateways
| Name | Parent | In 209.55.128.0/18 | /24s |
|---|---|---|---|
| Zscaler | 16,384100% | 64 |
Announcements
Nesting
More-specifics by size
Sized by addresses, colored by each announcement's type. Click a tile with children to zoom in, a leaf to open it.
More specific
Announcements inside
| Prefix | Origin | Type | Operator | Holder | RPKI |
|---|---|---|---|---|---|
| 209.55.128.0/24 since Aug 2022 | AS62044 | Corporate gateway | Corporate gatewaysoperated by Zscaler | Zscaler, Inc. | |
| 209.55.129.0/24 since Oct 2022 | AS53813 | Corporate gateway | Corporate gatewaysoperated by Zscaler | Zscaler, Inc. | |
| 209.55.130.0/24 since Oct 2022 | AS53813 | Corporate gateway | Corporate gatewaysoperated by Zscaler | Zscaler, Inc. | |
| 209.55.132.0/24 since Aug 2022 | AS22616 | Corporate gateway | Corporate gatewaysoperated by Zscaler | Zscaler, Inc. | |
| 209.55.133.0/24 since Sep 2022 | AS53813 | Corporate gateway | Corporate gatewaysoperated by Zscaler | Zscaler, Inc. | |
| 209.55.134.0/24 since Apr 2024 | AS53813 | Corporate gateway | Corporate gatewaysoperated by Zscaler | Zscaler, Inc. | |
| 209.55.135.0/24 since Oct 2022 | AS22616 | Corporate gateway | Corporate gatewaysoperated by Zscaler | Zscaler, Inc. | |
| 209.55.136.0/24 since Jan 2023 | AS53813 | Corporate gateway | Corporate gatewaysoperated by Zscaler | Zscaler, Inc. | |
| 209.55.137.0/24 since Jan 2023 | AS53813 | Corporate gateway | Corporate gatewaysoperated by Zscaler | Zscaler, Inc. | |
| 209.55.138.0/24 since Jan 2023 | AS62044 | Corporate gateway | Corporate gatewaysoperated by Zscaler | Zscaler, Inc. | |
| 209.55.139.0/24 since Feb 2023 | AS62044 | Corporate gateway | Corporate gatewaysoperated by Zscaler | Zscaler, Inc. | |
| 209.55.140.0/24 since Feb 2023 | AS53813 | Corporate gateway | Corporate gatewaysoperated by Zscaler | Zscaler, Inc. | |
| 209.55.141.0/24 since Oct 2023 | AS22616 | Corporate gateway | Corporate gatewaysoperated by Zscaler | Zscaler, Inc. | |
| 209.55.142.0/24 since Mar 2023 | AS22616 | Corporate gateway | Corporate gatewaysoperated by Zscaler | Zscaler, Inc. | |
| 209.55.143.0/24 since Apr 2023 | AS62044 | Corporate gateway | Corporate gatewaysoperated by Zscaler | Zscaler, Inc. | |
| 209.55.144.0/24 since Apr 2023 | AS62044 | Corporate gateway | Corporate gatewaysoperated by Zscaler | Zscaler, Inc. | |
| 209.55.145.0/24 since Jun 2023 | AS22616 | Corporate gateway | Corporate gatewaysoperated by Zscaler | Zscaler, Inc. | |
| 209.55.146.0/24 since Jun 2023 | AS22616 | Corporate gateway | Corporate gatewaysoperated by Zscaler | Zscaler, Inc. | |
| 209.55.147.0/24 since Dec 2023 | AS22616 | Corporate gateway | Corporate gatewaysoperated by Zscaler | Zscaler, Inc. | |
| 209.55.148.0/24 since Mar 2024 | AS22616 | Corporate gateway | Corporate gatewaysoperated by Zscaler | Zscaler, Inc. | |
| 209.55.149.0/24 since Mar 2024 | AS22616 | Corporate gateway | Corporate gatewaysoperated by Zscaler | Zscaler, Inc. | |
| 209.55.150.0/24 since Jan 2024 | AS53813 | Corporate gateway | Corporate gatewaysoperated by Zscaler | Zscaler, Inc. | |
| 209.55.151.0/24 since Jan 2024 | AS53813 | Corporate gateway | Corporate gatewaysoperated by Zscaler | Zscaler, Inc. | |
| 209.55.152.0/24 since Jul 2023 | AS62044 | Corporate gateway | Corporate gatewaysoperated by Zscaler | Zscaler, Inc. | |
| 209.55.153.0/24 since Jul 2023 | AS62044 | Corporate gateway | Corporate gatewaysoperated by Zscaler | Zscaler, Inc. | |
| 209.55.154.0/24 since Jul 2023 | AS62044 | Corporate gateway | Corporate gatewaysoperated by Zscaler | Zscaler, Inc. | |
| 209.55.155.0/24 since Jul 2023 | AS22616 | Corporate gateway | Corporate gatewaysoperated by Zscaler | Zscaler, Inc. | |
| 209.55.156.0/24 since Aug 2023 | AS62044 | Corporate gateway | Corporate gatewaysoperated by Zscaler | Zscaler, Inc. | |
| 209.55.157.0/24 since Sep 2023 | AS53813 | Corporate gateway | Corporate gatewaysoperated by Zscaler | Zscaler, Inc. | |
| 209.55.158.0/24 since Oct 2023 | AS22616 | Corporate gateway | Corporate gatewaysoperated by Zscaler | Zscaler, Inc. | |
| 209.55.159.0/24 since Oct 2023 | AS22616 | Corporate gateway | Corporate gatewaysoperated by Zscaler | Zscaler, Inc. | |
| 209.55.160.0/24 since Sep 2023 | AS22616 | Corporate gateway | Corporate gatewaysoperated by Zscaler | Zscaler, Inc. | |
| 209.55.161.0/24 since Nov 2023 | AS62044 | Corporate gateway | Corporate gatewaysoperated by Zscaler | Zscaler, Inc. | |
| 209.55.162.0/24 since Oct 2023 | AS22616 | Corporate gateway | Corporate gatewaysoperated by Zscaler | Zscaler, Inc. | |
| 209.55.163.0/24 since Dec 2023 | AS22616 | Corporate gateway | Corporate gatewaysoperated by Zscaler | Zscaler, Inc. | |
| 209.55.164.0/24 since Jan 2024 | AS22616 | Corporate gateway | Corporate gatewaysoperated by Zscaler | Zscaler, Inc. | |
| 209.55.165.0/24 since Jan 2024 | AS22616 | Corporate gateway | Corporate gatewaysoperated by Zscaler | Zscaler, Inc. | |
| 209.55.166.0/24 since Apr 2024 | AS53813 | Corporate gateway | Corporate gatewaysoperated by Zscaler | Zscaler, Inc. | |
| 209.55.167.0/24 since Apr 2024 | AS53813 | Corporate gateway | Corporate gatewaysoperated by Zscaler | Zscaler, Inc. | |
| 209.55.168.0/24 since Feb 2024 | AS62044 | Corporate gateway | Corporate gatewaysoperated by Zscaler | Zscaler, Inc. | |
| 209.55.169.0/24 since May 2024 | AS53813 | Corporate gateway | Corporate gatewaysoperated by Zscaler | Zscaler, Inc. | |
| 209.55.170.0/24 since Apr 2024 | AS53813 | Corporate gateway | Corporate gatewaysoperated by Zscaler | Zscaler, Inc. | |
| 209.55.171.0/24 since Apr 2024 | AS62044 | Corporate gateway | Corporate gatewaysoperated by Zscaler | Zscaler, Inc. | |
| 209.55.172.0/24 since Jul 2024 | AS62044 | Corporate gateway | Corporate gatewaysoperated by Zscaler | Zscaler, Inc. | |
| 209.55.173.0/24 since Jul 2024 | AS62044 | Corporate gateway | Corporate gatewaysoperated by Zscaler | Zscaler, Inc. | |
| 209.55.174.0/24 since Jul 2024 | AS22616 | Corporate gateway | Corporate gatewaysoperated by Zscaler | Zscaler, Inc. | |
| 209.55.175.0/24 since Jul 2024 | AS22616 | Corporate gateway | Corporate gatewaysoperated by Zscaler | Zscaler, Inc. | |
| 209.55.176.0/24 since Jul 2024 | AS62044 | Corporate gateway | Corporate gatewaysoperated by Zscaler | Zscaler, Inc. | |
| 209.55.177.0/24 since Aug 2024 | AS53813 | Corporate gateway | Corporate gatewaysoperated by Zscaler | Zscaler, Inc. | |
| 209.55.178.0/24 since Jul 2024 | AS62044 | Corporate gateway | Corporate gatewaysoperated by Zscaler | Zscaler, Inc. | |
| 209.55.179.0/24 since Jul 2024 | AS62044 | Corporate gateway | Corporate gatewaysoperated by Zscaler | Zscaler, Inc. | |
| 209.55.180.0/24 since Jul 2024 | AS62044 | Corporate gateway | Corporate gatewaysoperated by Zscaler | Zscaler, Inc. | |
| 209.55.181.0/24 since Jul 2024 | AS62044 | Corporate gateway | Corporate gatewaysoperated by Zscaler | Zscaler, Inc. | |
| 209.55.182.0/24 since Sep 2024 | AS53813 | Corporate gateway | Corporate gatewaysoperated by Zscaler | Zscaler, Inc. | |
| 209.55.183.0/24 since Sep 2024 | AS22616 | Corporate gateway | Corporate gatewaysoperated by Zscaler | Zscaler, Inc. | |
| 209.55.184.0/24 since Sep 2024 | AS53813 | Corporate gateway | Corporate gatewaysoperated by Zscaler | Zscaler, Inc. | |
| 209.55.185.0/24 since Feb 2025 | AS62044 | Corporate gateway | Corporate gatewaysoperated by Zscaler | Zscaler, Inc. | |
| 209.55.186.0/24 since Mar 2025 | AS62044 | Corporate gateway | Corporate gatewaysoperated by Zscaler | Zscaler, Inc. | |
| 209.55.187.0/24 since Oct 2024 | AS22616 | Corporate gateway | Corporate gatewaysoperated by Zscaler | Zscaler, Inc. | |
| 209.55.188.0/24 since Oct 2024 | AS22616 | Corporate gateway | Corporate gatewaysoperated by Zscaler | Zscaler, Inc. | |
| 209.55.189.0/24 since Nov 2024 | AS62044 | Corporate gateway | Corporate gatewaysoperated by Zscaler | Zscaler, Inc. | |
| 209.55.190.0/24 since Nov 2024 | AS62044 | Corporate gateway | Corporate gatewaysoperated by Zscaler | Zscaler, Inc. | |
| 209.55.191.0/24 since Oct 2024 | AS62044 | Corporate gateway | Corporate gatewaysoperated by Zscaler | 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@ |
| └ 209.55.128.0/24 | 256 | ZSCALER-OSL3 | Zscaler, Inc. (C08780452) · NO | Reassigned | Jul 28, 2022 | poc-abuse@ via ZSCAL |
| └ 209.55.129.0/24 | 256 | ZSCALER-BOM6 | Zscaler Softech India Private Limited (C08947322) · IN | Reassigned | Oct 12, 2022 | poc-abuse@ via ZSCAL |
| └ 209.55.130.0/24 | 256 | ZSCALER-DEL1 | Zscaler Softech India Private Limited (C08947331) · IN | Reassigned | Oct 12, 2022 | poc-abuse@ via ZSCAL |
| └ 209.55.132.0/24 | 256 | ZSCALER-ATL2 | Zscaler, Inc. (C08853629) · US | Reassigned | Aug 30, 2022 | poc-abuse@ via ZSCAL |
| └ 209.55.133.0/24 | 256 | ZSCALER-SYD3 | Zscaler, Inc. (C08899650) · AU | Reassigned | Sep 20, 2022 | poc-abuse@ via ZSCAL |
| └ 209.55.136.0/24 | 256 | ZSCALER-MAA2 | Zscaler Softech India Private Limited (C09180031) · IN | Reassigned | Feb 2, 2023 | poc-abuse@ via ZSCAL |
| └ 209.55.137.0/24 | 256 | ZSCALER-MAA2 | Zscaler Softech India Private Limited (C09180034) · IN | Reassigned | Feb 2, 2023 | poc-abuse@ via ZSCAL |
| └ 209.55.138.0/24 | 256 | ZSCALER-CPT4 | Zscaler, Inc. (C09166791) · ZA | Reassigned | Jan 26, 2023 | poc-abuse@ via ZSCAL |
| └ 209.55.139.0/24 | 256 | ZSCALER-MAD3 | Zscaler, Inc. (C09284325) · ES | Reassigned | Mar 6, 2023 | poc-abuse@ via ZSCAL |
| └ 209.55.140.0/24 | 256 | ZSCALER-HKG3 | Zscaler, Inc. (C09285231) · HK | Reassigned | Mar 7, 2023 | poc-abuse@ via ZSCAL |
| └ 209.55.141.0/24 | 256 | ZSCALER-DFW1 | Zscaler, Inc. (C10260649) · US | Reassigned | Oct 9, 2023 | poc-abuse@ via ZSCAL |
| └ 209.55.142.0/24 | 256 | ZSCALER-WAS1 | Zscaler, Inc. (C09320258) · US | Reassigned | Mar 21, 2023 | poc-abuse@ via ZSCAL |
| └ 209.55.143.0/24 | 256 | ZSCALER-FRA4 | Zscaler, Inc. (C09357179) · DE | Reassigned | Apr 5, 2023 | poc-abuse@ via ZSCAL |
| └ 209.55.144.0/24 | 256 | ZSCALER-ZRH1 | Zscaler, Inc. (C09357231) · CH | Reassigned | Apr 5, 2023 | poc-abuse@ via ZSCAL |
| └ 209.55.145.0/24 | 256 | ZSCALER-SJC4 | Zscaler, Inc. (C09661054) · US | Reassigned | Jun 14, 2023 | poc-abuse@ via ZSCAL |
| └ 209.55.147.0/24 | 256 | ZSCALER-NYC4 | Zscaler, Inc. (C10530394) · US | Reassigned | Dec 12, 2023 | poc-abuse@ via ZSCAL |
| └ 209.55.148.0/24 | 256 | ZSCALER-RIO1 | Zscaler, Inc. (C10532816) · BR | Reassigned | Dec 13, 2023 | poc-abuse@ via ZSCAL |
| └ 209.55.149.0/24 | 256 | ZSCALER-RIO1 | Zscaler, Inc. (C10532818) · BR | Reassigned | Dec 13, 2023 | poc-abuse@ via ZSCAL |
| └ 209.55.150.0/24 | 256 | ZSCALER-HYD1 | Zscaler Softech India Private Limited (C09815506) · IN | Reassigned | Jul 14, 2023 | poc-abuse@ via ZSCAL |
| └ 209.55.151.0/24 | 256 | ZSCALER-HYD1 | Zscaler Softech India Private Limited (C09815507) · IN | Reassigned | Jul 14, 2023 | poc-abuse@ via ZSCAL |
| └ 209.55.152.0/24 | 256 | ZSCALER-WAW2 | Zscaler, Inc. (C09774215) · PL | Reassigned | Jul 6, 2023 | poc-abuse@ via ZSCAL |
| └ 209.55.153.0/24 | 256 | ZSCALER-AMS2 | Zscaler, Inc. (C09774239) · NL | Reassigned | Jul 6, 2023 | poc-abuse@ via ZSCAL |
| └ 209.55.154.0/24 | 256 | ZSCALER-MIL3 | Zscaler, Inc. (C09797912) · IT | Reassigned | Jul 11, 2023 | poc-abuse@ via ZSCAL |
| └ 209.55.155.0/24 | 256 | ZSCALER-SJC4 | Zscaler, Inc. (C09873869) · US | Reassigned | Jul 25, 2023 | poc-abuse@ via ZSCAL |
| └ 209.55.156.0/24 | 256 | ZSCALER-AMS2 | Zscaler, Inc. (C09996948) · NL | Reassigned | Aug 16, 2023 | poc-abuse@ via ZSCAL |
| └ 209.55.157.0/24 | 256 | ZSCALER-OSA1 | Zscaler, Inc. (C10328427) · JP | Reassigned | Oct 25, 2023 | poc-abuse@ via ZSCAL |
| └ 209.55.158.0/24 | 256 | ZSCALER-CHI2 | Zscaler, Inc. (C10260542) · US | Reassigned | Oct 9, 2023 | poc-abuse@ via ZSCAL |
| └ 209.55.159.0/24 | 256 | ZSCALER-CHI2 | Zscaler, Inc. (C10260543) · US | Reassigned | Oct 9, 2023 | poc-abuse@ via ZSCAL |
| └ 209.55.161.0/24 | 256 | ZSCALER-LON5 | Zscaler, Inc. (C10534498) · GB | Reassigned | Dec 13, 2023 | poc-abuse@ via ZSCAL |
| └ 209.55.162.0/24 | 256 | ZSCALER-CHI1 | Zscaler, Inc. (C10260641) · US | Reassigned | Oct 9, 2023 | poc-abuse@ via ZSCAL |
| └ 209.55.163.0/24 | 256 | ZSCALER-NYC4 | Zscaler, Inc. (C10530408) · US | Reassigned | Dec 12, 2023 | poc-abuse@ via ZSCAL |
| └ 209.55.166.0/24 | 256 | ZSCALER-TYO5 | Zscaler, Inc. (C10845337) · JP | Reassigned | May 16, 2024 | poc-abuse@ via ZSCAL |
| └ 209.55.167.0/24 | 256 | ZSCALER-TYO5 | Zscaler, Inc. (C10845339) · JP | Reassigned | May 16, 2024 | poc-abuse@ via ZSCAL |
| └ 209.55.172.0/24 | 256 | ZSCALER-PAR4 | Zscaler, Inc. (C10866402) · FR | Reassigned | Jun 6, 2024 | poc-abuse@ via ZSCAL |
| └ 209.55.173.0/24 | 256 | ZSCALER-PAR4 | Zscaler, Inc. (C10866401) · FR | Reassigned | Jun 6, 2024 | poc-abuse@ via ZSCAL |
| └ 209.55.174.0/24 | 256 | ZSCALER-DFW2 | Zscaler, Inc. (C10865569) · US | Reassigned | Jun 5, 2024 | poc-abuse@ via ZSCAL |
| └ 209.55.175.0/24 | 256 | ZSCALER-DFW2 | Zscaler, Inc. (C10865568) · US | Reassigned | Jun 5, 2024 | poc-abuse@ via ZSCAL |
| └ 209.55.182.0/24 | 256 | ZSCALER-PER1 | Zscaler, Inc. (C10925826) · AU | Reassigned | Aug 12, 2024 | poc-abuse@ via ZSCAL |
| └ 209.55.186.0/24 | 256 | ZSCALER-TLV2 | Zscaler, Inc. (C11159384) · IL | Reassigned | Apr 3, 2025 | poc-abuse@ via ZSCAL |
| └ 209.55.187.0/24 | 256 | ZSCALER-ATL3 | Zscaler, Inc. (C11099943) · US | Reassigned | Feb 11, 2025 | poc-abuse@ via ZSCAL |
| └ 209.55.188.0/24 | 256 | ZSCALER-ATL3 | Zscaler, Inc. (C11099942) · US | Reassigned | Feb 11, 2025 | poc-abuse@ via ZSCAL |
| └ 209.55.189.0/24 | 256 | ZSCALER-MAD4 | Zscaler, Inc. (C11082041) · ES | Reassigned | Jan 27, 2025 | poc-abuse@ via ZSCAL |
| └ 209.55.190.0/24 | 256 | ZSCALER-MAD4 | Zscaler, Inc. (C11082040) · ES | Reassigned | Jan 27, 2025 | poc-abuse@ via ZSCAL |
| └ 209.55.191.0/24 | 256 | ZSCALER-MAN2 | Zscaler, Inc. (C10997563) · GB | Reassigned | Oct 24, 2024 | 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
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
Who has announced this prefix
Summary
Routing history
- Pattern
- Stable
- First seen
- Sep 2021
- Current origin since
- Sep 2021 · 5.1 yr
- Origin networks
- 1
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS22616 | RADB | Zscaler SJC4 | MAINT-AS53444 | Nov 13, 2023 |
IRR inside
Route objects inside
| Prefix | Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|---|
| 209.55.131.0/24 | AS53813 | RADB | Zscaler TPE2 | MAINT-AS53444 | Nov 13, 2023 |
| 209.55.150.0/23 | AS53813 | RADB | Zscaler HYD1 | MAINT-AS53444 | Nov 13, 2023 |
| 209.55.166.0/23 | AS62044 | RADB | Zscaler MAN1 | MAINT-AS53444 | Feb 8, 2024 |
Whois
Registration for this announcement
- Range
- 209.
55. 128. 0 - 209. 55. 223. 255 - Netname
- ZSCAL
- Registrant
- Zscaler, Inc.
- Organization
- Zscaler, Inc. (ZSCAL)
- Org address
- 4401 Great America Pkwy, Santa Clara, CA, 95054
- Org country
- US
- Type
- Direct Allocation
- Handle
- NET-209-55-128-0-1
- Parent
- NET-209-0-0-0-0
- Created
- Sep 21, 2021
- 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