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DD Form 2490-21 is a Department of Defense form, not a service form: DD 2490-21, Network Planning and Configuration Data - Digital Loop and Trunk Worksheet. This form has not been set up to work with a text-to-speech reader. Contact the DoD Forms Manager for further details if this access is required., used to Network Planning and Configuration Data - Digital Loop and Trunk Worksheet. The DD prefix is the operative fact. It means one blank serves every military department — Army, Navy, Air Force, Marine Corps, Space Force, Coast Guard under Defense jurisdiction — plus the defense agencies and combatant commands. No branch variant exists.
Requirement traces to not stated; the form belongs to not stated. Everything about schedule sits below that in local instruction, which is where to ask if a date matters.
Use not stated, status not stated. Older printings circulate widely and lose their currency Department-wide the moment a new edition issues.
Available: PDF, across 1 pages, roughly 200 fields. That is the whole scope of the download decision.
Default to fillable pdf, print only when you must. The fillable file stores what you type; the printable file is a blank picture. A Department form often travels further than a service form — scanned, emailed, forwarded to an agency that never saw the original — and typed text is what survives that.
Xfdl is a legacy Department format, IBM Lotus Forms, requiring the matching viewer. Its survival in DD distribution reflects how widely it was fielded across the Department, not any advantage over pdf today.
Free download, every format. Do not fill the form in a browser tab — browser pdf viewers handle interactive fields inconsistently and discard entries on close.
What the form asks for
- Press this Reset button to clear the data from all fields.
Start by matching the printed date to not stated. Old blanks accumulate in shared folders for years. Because the Department reissues to all services in one action, nobody is still accepting the previous layout by local custom.
For anything ambiguous in a specific field, the form's own instructions come first and not stated controls where the two differ.
Route it where not stated or local procedure directs, and keep a copy first. On a Department form the receiving office is frequently outside your own chain — another service, a defense agency, a joint command — which makes recovering a lost original slower than it would be internally.
A number is a complete address in the DD series. Because the sequence is Department-level and not duplicated per service, there is nothing further to specify.
Where a procedure cites both a service form and a DD form, the two are unconnected. Service numbering answers to a service proponent, DD numbering to not stated or another Department office, and the two sequences were never aligned. Matching numbers mean nothing whatever.
Three drivers of revision: directive reissue, altered collection requirements, updated statutory notice text. No notification accompanies any of them, so download fresh and confirm not stated rather than reusing an archived file.
What is here is the blank form and a description of it. What is not here is legal guidance or any assurance about a particular filing — this page is not the issuing authority and does not speak for one. Those questions go to not stated, to your servicing administrative office, or to the authority identified in not stated.
Questions and answers
- What is DD Form 2490-21?
- DD 2490-21, Network Planning and Configuration Data - Digital Loop and Trunk Worksheet. This form has not been set up to work with a text-to-speech reader. Contact the DoD Forms Manager for further details if this access is required.
- Which edition is current?
- Not stated by the publisher
- Who is responsible for this form?
- Not stated
- In which formats can it be downloaded?