ArbSeg

Boundary segment points defining the geographic boundaries of each ARTCC or CERAP facility

Source: NASRTable: ARB_SEGVersion: e25086c3e952 (effective 2026-04-16)

Ordered by LOCATION_ID, TYPE, ALTITUDE, POINT_SEQ. Unique key: REC_ID. References LOCATION_ID in ARB_BASE. Replaces legacy ARB.txt Subscriber File.

Example query

# Introspect the ArbSeg type in GraphiQL at https://api.nav.sortie.co/graphql
# Example shape (pair with a compatible root query field):
{
  # ...rootQuery... {
    effDate
    recId
    locationId
    locationName
  # }
}

Run at https://api.nav.sortie.co/graphql — GraphiQL is available in-browser.

Fields (19)

Field	Type	Description	Units	Enum
effDate ← EFF_DATE	String	The 28 Day NASR Subscription Effective Date in format YYYY/MM/DD
recId ← REC_ID	String	Unique record identifier; concatenation of LOCATION_ID, BNDRY_CODE, and a 5-character point designator
locationId ← LOCATION_ID	ArbSegLocationId	Location identifier referencing LOCATION_ID in ARB_BASE; identifies the ARTCC or CERAP facility this boundary segment belongs to		26 values ZAB — Albuquerque ARTCC ZAK — Oakland Oceanic ARTCC ZAN — Anchorage Oceanic ZAP — Anchorage ARTCC ZAU — Chicago ARTCC ZBW — Boston ARTCC ZDC — Washington ARTCC ZDV — Denver ARTCC ZFW — Fort Worth ARTCC ZHN — Honolulu Control Facility ZHU — Houston ARTCC ZID — Indianapolis ARTCC ZJX — Jacksonville ARTCC ZKC — Kansas City ARTCC ZLA — Los Angeles ARTCC ZLC — Salt Lake City ARTCC ZMA — Miami ARTCC ZME — Memphis ARTCC ZMP — Minneapolis ARTCC ZNY — New York ARTCC ZOA — Oakland ARTCC ZOB — Cleveland ARTCC ZSE — Seattle ARTCC ZSU — San Juan CERAP ZTL — Atlanta ARTCC ZWY — New York Oceanic FIR
locationName ← LOCATION_NAME	ArbSegLocationName	Center name of the ARTCC or CERAP facility; corresponds to LOCATION_NAME in ARB_BASE		26 values ALBUQUERQUE — Albuquerque ARTCC ANCHORAGE — Anchorage ARTCC ANCHORAGE OCEANIC — Anchorage Oceanic ARTCC ATLANTA — Atlanta ARTCC BOSTON — Boston ARTCC CHICAGO — Chicago ARTCC CLEVELAND — Cleveland ARTCC DENVER — Denver ARTCC FORT WORTH — Fort Worth ARTCC HONOLULU CONTROL FACILITY — Honolulu Control Facility HOUSTON — Houston ARTCC INDIANAPOLIS — Indianapolis ARTCC JACKSONVILLE — Jacksonville ARTCC KANSAS CITY — Kansas City ARTCC LOS ANGELES — Los Angeles ARTCC MEMPHIS — Memphis ARTCC MIAMI — Miami ARTCC MINNEAPOLIS — Minneapolis ARTCC NEW YORK — New York ARTCC NEW YORK OCEANIC FIR — New York Oceanic FIR OAKLAND — Oakland ARTCC OAKLAND OCEANIC ARTCC — Oakland Oceanic ARTCC SALT LAKE CITY — Salt Lake City ARTCC SAN JUAN — San Juan CERAP SEATTLE — Seattle ARTCC WASHINGTON — Washington ARTCC
altitude ← ALTITUDE	Altitude	Boundary altitude structure indicating the vertical extent of the boundary		HIGH — High altitude boundary LOW — Low altitude boundary UNLIMITED — Unlimited altitude boundary
type ← TYPE	Type	Boundary type indicating the classification of the airspace boundary		ARTCC — Air Route Traffic Control Center boundary CTA — Control Area boundary CTA/FIR — Combined Control Area and Flight Information Region boundary FIR — Flight Information Region boundary UTA — Upper Control Area boundary
pointSeq ← POINT_SEQ	Int	Sequencing number in multiples of ten indicating the order of boundary points as adapted for the given boundary
latDeg ← LAT_DEG	Int	Boundary point latitude degrees component	degrees
latMin ← LAT_MIN	Int	Boundary point latitude minutes component	minutes
latSec ← LAT_SEC	Float	Boundary point latitude seconds component	seconds
latHemis ← LAT_HEMIS	LatHemis	Boundary point latitude hemisphere indicator		N — North S — South
latDecimal ← LAT_DECIMAL	Float	Boundary point latitude in signed decimal degrees format (negative = South)	degrees
longDeg ← LONG_DEG	Int	Boundary point longitude degrees component	degrees
longMin ← LONG_MIN	Int	Boundary point longitude minutes component	minutes
longSec ← LONG_SEC	Float	Boundary point longitude seconds component	seconds
longHemis ← LONG_HEMIS	LongHemis	Boundary point longitude hemisphere indicator		E — East W — West
longDecimal ← LONG_DECIMAL	Float	Boundary point longitude in signed decimal degrees format (negative = West)	degrees
bndryPtDescrip ← BNDRY_PT_DESCRIP	String	Description of the boundary line connecting points on the boundary
nasDescripFlag ← NAS_DESCRIP_FLAG	NasDescripFlag	When set to X, indicates this point is used only in the NAS description and not the legal description of the boundary		X — Point used only in NAS description, not legal description