NSCC Network Connectivity Web Modernization

The National Securities Clearing Corporation (NSCC) is in the process of modernizing the Web applications as some of the technology used to support them is nearing end of life. The initiative is being rolled out in stages, with each application having its own timeline, along with associated important notice and connectivity guide. Depending on the applications used that your firm uses, the impact varies. For further information, view the comprehensive technical network connectivity guide associated with your application.

Note: Existing features and capabilities for each application are not impacted by this initiative. 

Log in to access the network connectivity guide for a specific application.

Network Connectivity for Obligation Warehouse Web Modernization

October 25, 2024

Network Connectivity for ACATS Modernization

July 03, 2025

Network Connectivity for CMU RTTM Web Modernization

March 05, 2025

Network Connectivity Guide for Consolidated Trade Summary (CTS) and Universal Trade Capture (UTC) Web Modernization

Modified August 04, 2025

 

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Manage My Services for ITP Product Administrators

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ALERT: Maintaining SSIs for Buy-Side Clients

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ALERT: Maintaining SSIs for Sell-Side Clients

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CTM UI: Manage Your Trade Exceptions

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CTM UI: CTM Matching Concepts

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CTM UI: Manually Enter Your Trades

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ISO Deliver Order Output Message Layouts (MT544, MT545, MT546, MT547, MT548)

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CNS® Dashboard User Help

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Settlement Web Help

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CNS® Exemptions

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CNS® Overview: Part 1

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CNS® Overview: Part 2

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CNS Seg Exemption Input: DataTrak ID 06121 - Original and Y2K Format

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Settlement: MT548 – Long Version Participant Status

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Settlement: MT548 - Long Version Accounting Participant Status

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Settlement: MT548 – Short Version Participant Status

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ALERT Beginners Level Training

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ALERT: How to Edit a Model

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TradeSuite ID Confirm Trade Input Message Specification

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TradeSuite ID Confirm Trade Output Message Specification

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CTM MTI Specification: Debt/Equity for Investment Managers

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I&RS LNA Record Layouts v25-9

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CTM XML DTDs for Debt and Equity

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Mandatory PSET Field Population FAQ

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