# Network Code	Network Name	Network Operator	Network Country (ISO & Name)	Network Website	Deployment Country (if different)	Digital Object Identifier (DOI)
N0	North Osetia Regional Seismic Network of the Russian Federation	North Osetia Branch of the Geophysical Survey of the Russian Academy of Sciences	Russian Federation		Russian Federation	10.7914/kmx2-4r56
N1	NGSA Seismic Network	Nigerian Geological Survey Agency/University of Abuja	Nigeria/Nigeria	https://ngsa.gov.ng/	Nigeria	10.7914/SN/N1
N4	Central and Eastern US Network	Albuquerque Seismological Laboratory/USGS	United States of America	https://earthquake.usgs.gov/monitoring/operations/network.php?virtual_network=ANSS	United States of America	10.7914/SN/N4
N9	N9 - Svalbard Glaciers Surge Monitoring	University of Oslo	Norway		Svalbard and Jan Mayen	10.7914/g6dz-5a09
NA	Caribbean Netherlands Seismic Network	Royal Netherlands Meteorological Institute 	Netherlands	http://rdsa.knmi.nl/network/NA/	Caribbean Netherlands	10.21944/dffa7a3f-7e3a-3b33-a436-516a01b6af3f
NB	Northeastern Brazil UFRN	Universidade Federal do Rio Grande do Norte	Brazil	http://www.sistemas.ufrn.br/	Brazil	
NC	USGS Northern California Seismic Network	USGS Menlo Park	United States of America	http://www.ncedc.org/ncsn/	United States of America	10.7914/SN/NC
ND	New CaleDonia Broadband Seismic Network	Centre IRD de Noumea, Nouvelle-Caledonie	New Caledonia	http://www.seisme.nc	New Caledonia	10.7914/SN/ND
NE	New England Seismic Network	Albuquerque Seismological Laboratory/USGS	United States of America	http://aki.bc.edu/nesn.htm	North East United States	10.7914/SN/NE
NF	North Fork Valley Seismic Network	National Institute for Occupational and Health	United States of America		United States of America	
NG	Reserved for Papua New Guinea Seismic Network					
NH	Geological Survey of North Rhine - Westphalia	Geological Survey of North Rhine - Westphalia	Germany	http://www.gd.nrw.de/gg_le.htm	Germany	
NI	North-East Italy Broadband Network	Istituto Nazionale di Oceanografia e di Geofisica Sperimentale, University of Trieste	Italy		Italy	10.7914/SN/NI
NJ	Nigerian National Network of Seismographi Stations (NNNSS)	Centre for Geodesy and Geodynamics	Nigeria		Nigeria	10.7914/SN/NJ
NK	Nepal Kathmandu	National Seismological Centre	Nepal		Nepal	10.7914/SN/NK
NL	Netherlands Seismic and Acoustic Network	Royal Netherlands Meteorological Institute 	Netherlands	http://rdsa.knmi.nl/network/NL/	Netherlands	10.21944/e970fd34-23b9-3411-b366-e4f72877d2c5
NM	Cooperative New Madrid Seismic Network	CERI - University of Memphis		https://www.memphis.edu/ceri/about/index.php		
NN	Nevada Seismic Network	University of Nevada Reno	United States of America	http://www.seismo.unr.edu	United States of America	10.7914/SN/NN
NO	NORSAR Station Network	NORSAR	Norway		Norway	10.21348/d.no.0001
NP	United States National Strong-Motion Network	U.S. Geological Survey	United States of America	http://earthquake.usgs.gov/monitoring/nsmp/	United States of America	10.7914/SN/NP
NQ	NetQuakes	U.S. Geological Survey	United States of America	http://earthquake.usgs.gov/monitoring/netquakes/	United States of America	10.7914/SN/NQ
NR	NARS	Utrecht University	Netherlands	http://www.geo.uu.nl/Research/Seismology/nars.html	Multiple Countries	10.7914/SN/NR
NS	University of Bergen Seismic Network	University of Bergen	Norway	http://www.skjelv.no	Norway	10.7914/SN/NS
NT	USGS Geomagnetism Program	U.S. Geological Survey	United States of America	https://geomag.usgs.gov/	United States of America	10.7914/SN/NT
NU	Nicaraguan Seismic Network	Instituto Nicaraguense de Estudios Territoriales	Nicaragua	http://webserver2.ineter.gob.ni/sis/monitor.html	Nicaragua	10.7914/SN/NU
NV	NEPTUNE	Ocean Networks Canada	Canada	http://oceannetworks.ca/	Canada	10.7914/SN/NV
NW	Northwestern University Seismic Network	Northwestern University	United States of America	http://www.earth.northwestern.edu/	United States of America	
NX	Nanometrics Research Network	Nanometrics Seismological Instruments	Canada		Canada	10.7914/SN/NX
NY	Yukon-Northwest Seismic Network	University of Ottawa	Canada		Canada	10.7914/SN/NY
NZ	New Zealand National Seismograph Network	Institute of Geological & Nuclear Sciences Ltd	New Zealand	https://www.geonet.org.nz/about	New Zealand	10.21420/G19Y-9D40