Reaffirmation of Exchange Gateway IP Whitelisting in Equity Segment
BSE notice 20260911-27 · 11 Sept 2026
Official title
Reminder to reaffirm whitelisting of exchange Gateway IPs in Equity Segment
Official record
Open source pageSummary
Check the official recordWhat changed
BSE reminds trading members to verify the whitelisting of specific exchange gateway IP addresses for the Equity segment. Members must ensure connectivity to the listed IP addresses and ports to prevent access issues during gateway assignments. The exchange recommends that members allow the entire 10.255.X.X IP range to accommodate future infrastructure additions without further configuration changes. Members who do not allow the full range must update their network configurations to include the specified IPs. Members must continue to send connection requests to the existing connection gateway address. This notice follows previous instructions regarding connectivity requirements.
What you must do
- Ensure whitelisting of specified exchange gateway IPs and ports is completed and validated.
- Update network configurations to include the 10.255.X.X range if not already permitted.
Who is affected
Document text
[Image omitted. See the official document.]
NOTICE
| Notice No. | 20260911-27 |
|---|---|
| Notice Date | 11 Sep 2026 |
| Category | Trading |
| Segment | Equity |
| Department | Trading Operations |
| Subject | Reminder to reaffirm whitelisting of exchange Gateway IPs in Equity Segment |
| Attachments | No Attachment |
[Image omitted. See the official document.]
In Continuation to Notice No. 20260630-14 dated 30^th^ June 2026. This is to reaffirm that the required IP whitelisting has already been completed at your end for the exchange IPs mentioned below. These IPs are partly used in production and remaining are planned to be used.
| Segment | IP Address | PORT |
|---|---|---|
| Equity | 10.255.255.65 | |
| 10.255.255.66 | ||
| 10.255.255.67 | ||
| 10.255.255.68 | ||
| 10.255.255.69 | ||
| 10.255.255.70 | 18906 to 18914 | |
| Equity (BSE Colocation) | 10.255.253.5 | |
| 10.255.253.6 | ||
| 10.255.253.7 | 18906 to 18914 |
Please note that from Tuesday onwards, you may be assigned to a gateway that may be hosted on any of the above IPs. Accordingly, you are requested to ensure that the whitelisting is completed and validated in advance to avoid any connectivity or access-related issues once the gateway assignment is enabled.
As per the BOLT Plus Connectivity Manual, it is recommended to allow the complete IP range of 10.255.X.X to avoid any last-minute configuration changes. The manual further recommends that clients should permit the above-mentioned routes within their network. The subnet has been intentionally kept broad to accommodate any future addition of servers within the exchange infrastructure without requiring changes at the client end. Please note that the exchange may introduce new servers within this defined range without prior intimation.
Accordingly, all existing gateways are assigned IP addresses within the 10.255.X.X range, and any new or additional gateways will also be provisioned within the same range. Therefore, if the member network has already allowed routing for the range 10.255.0.0 with subnet mask 255.255.0.0, all current and future gateways will be accessible without any further changes. Otherwise, the member network will need to update configurations to include newly added gateways.
Also, as indicated above the Connection Gateway IP address continues to remain the same and the member application should send the connection request to connection gateway only as it is done currently.
For and on behalf of the Exchange
Ketan Jantre
Head – Trading Operations
Nawaid Pathan
Vice President – Information Technology
Source details
- Source
- BSE Ltd (Bombay Stock Exchange)
- Type
- notice
- Published by source
- 11 Sept 2026
- Document number
- 20260911-27
- Issuing division
- Trading Operations
- Coverage area
- securities