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Change Management Requesting changes to the HIS Registry of Geography.

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This section defines the process that the registry steward will follow to maintain the registry.

Governing philosophy

Additions or changes will be made to the when the submitter can demonstrate that a code is needed to describe a validly existing (either present or historical) geographic region not represented in the existing code, or that the name(s) associated with a code are in error. In keeping with the philosophy of having a code represent a specific geographic region, codes will not be changed simply to have a better mnemonic relationship to the current name of a region.

How to make a change request

If you believe any of the information in the is in error, wish to have additional codes assigned, send your proposed change by e-mail to ROG_Steward(at), by fax to +1-719-548-7459, or by


mail to
ROG Steward
PO Box 63719
Colorado Springs, CO 80962 USA

Be sure to report the source of your information and the relationship of the regions for which codes are requested to regions already coded in the HIS system. If at all possible, particularly when requesting assignment of codes for a major rearrangement of political subdivisions or a level of subdivisions not previously assigned codes, provide a URL to an authoritative site giving preferred local names of the new subdivisions in Latin characters (with diacritics if used locally). Sites including maps of the regions are strongly preferred, as they will clearly show the spatial relationship with existing regions. If submitting requests for codes by mail, if at all possible include a printed form of the region names for which codes are requested, a floppy disk or CD-ROM with the same information, and if at all possible an authoritative map showing the boundaries of the regions for which codes are requested.


If you are requesting new code assignments at a country or first-level political subdivion level, please check the appropriate lookup table on the NIMA Geonet Names Server at to see if codes have already been assigned and if you believe the names to be accurate. If the NIMA's codes and names are correct, simply use the NIMA codes and notify us that the change has occurred.

How change requests are processed

In straighforward cases (i.e. situations where the names of regions for which codes are requested are in machine-readable form, documented by authoritative sources, and undisputed), GMI will generally provide new codes within three weeks. Additional time will be required if extensive research, verification, manual key entry, or character code conversion is required; in these cases we will notify you within three weeks of your submission of the expected time required for code assignment.

How updates are made

The registry will be updated and posted whenver requested changes are made. We will also update the HIS standard to conform with NIMA standards whenever we become aware of changes at a country level, or at least once per year. The most recent version will always be available for download from this page.

What to do in the meantime

The plus symbol (+) will never be assigned as part of code at any level, and are reserved for local use. Thus, if you need a code for second-level political subdivisions within an existing first-level subdivision XX01, you could encode the first one XX01+A and increment the final character as needed to code all new areas.