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Hours of Operation

Operating Hours

Note: The ARIN office will be closing early on Wednesday, 23 November and closed on Thursday, 24 November - Friday, 25 November in observance of Thanksgiving. On 23 November, the main office and Financial Services Help Desk will close at 3:00 PM EST and the Registration Services Help Desk will close at 3:30 PM EST. ARIN's office will reopen with normal operating hours on Monday, 28 November.

The ARIN office is open from 7:00 AM to 7:00 PM ET, Monday through Friday. Outside operating hours, messages may be left for the ARIN Registration Services Help Desk (703-227-0660), ARIN's Billing Help Desk (703-227-9886), or on ARIN's main number (703-227-9840). Email to ARIN will continue to be processed when the office is closed; however in the event of holidays or closings due to inclement weather, responses or the processing of resource requests may be delayed.

Holidays

ARIN closes its office for the following holidays, and notes these closings at https://www.arin.net.

ARIN 2016 Holiday Schedule
New Year's Day Friday 1 January
Martin Luther King, Jr. Day Monday 18 January
Presidents' Day Monday 15 February
Memorial Day Monday 30 May
Independence Day Monday 4 July
Labor Day Monday 5 September
Thanksgiving Thursday - Friday 24-25 November
Christmas Friday - Monday 23-26 December

The ARIN office also closes early on 27 May, 2 September, 23 November, and 22 December.

Inclement Weather

Should the ARIN office close due to inclement weather or other extreme circumstance, such closings are noted at https://www.arin.net/.

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