# Network Code	Network Name	Network Operator	Network Country (ISO & Name)	Network Website	Deployment Country (if different)	Digital Object Identifier (DOI)
T	Tonga Seismic Network	Tonga Geological Services	Tonga		Tonga	
T1	IPE_ETE	Institute of Physics of the Earth Masaryk University	Czechia	http://www.ipe.muni.cz/	Czechia	10.7914/SN/T1
T3	Rete Accelerometrica Terna	TERNA	Italy		Italy	
T4	Canakkale Onsekiz Mart University Earthquake Research Center	Canakkale Onsekiz Mart University	Türkiye		Türkiye	
T5	Central Weather Administration Seismographic Network	Central Weather Administration		https://gdms.cwa.gov.tw	Taiwan	10.7914/SN/T5
T9	TAMU Seismic Network	Texas A&M University	United States of America		texas	10.7914/ypev-aj03
TA	USArray Transportable Array	IRIS Transportable Array	United States of America	http://www.earthscope.org/observatories/usarray	United States of America	10.7914/SN/TA
TB	MRC Earth and Marine Sciences Network	TÜBITAK Marmara Research Center	Türkiye		Türkiye	10.7914/SN/TB
TC	Red Sismológica Nacional de Costa Rica	Universidad de Costa Rica	Costa Rica	http://www.rsn.ucr.ac.cr/	Costa Rica	10.15517/TC
TD	TransAlta Monitoring Network	TransAlta Corporation	Canada	http://www.transalta.com/	Canada	
TE	EGAT Dams Seismic Monitoring System	Electricity Generating Authority of Thailand	Thailand		Thailand	10.7914/SN/TE
TF	Tajikistan National Seismic Network	Insitute of Geology, Earthquake Engineering and Seismology of the NAST	Tajikistan		Tajikistan	10.7914/c44e-zh63
TG	Royal Irrigation Department	Royal Irrigation Department	Thailand		Thailand	10.7914/SN/TG
TH	Thüringer Seismologisches Netz	Institut fuer Geowissenschaften, Friedrich-Schiller-Universitaet Jena	Germany	https://www.igw.uni-jena.de/tsn	Germany	10.7914/SN/TH
TI	Centro Sismologico de America Central	Universidad de Costa Rica	Costa Rica		Costa Rica	
TJ	Tajikistan National Seismic Network	Geophysical Survey of the National Academy of sciences of Tajikistan	Tajikistan		Tajikistan	10.7914/SN/TJ
TK	Turkish National Strong Motion Network	Disaster and Emergency Management Authority	Türkiye	https://tadas.afad.gov.tr/	Türkiye	10.7914/SN/TK
TL	Armutlu Local Seismic Network	Kocaeli University	Türkiye	http://www.kocaeli.edu.tr/yubam/	Turkey	
TM	Thai Seismic Monitoring Network	Earthquake Observation Division/Thai meteorological department	Thailand/Thailand		Thailand	
TN	Eastern Tennessee Seismic Network	Joint Institute for Energy and the Evnironment	United States of America		United States of America	
TO	Tectonic Observatory - MASE, VEOX , PeruSE, CCSE	California Institute of Technology	United States of America	http://web.gps.caltech.edu/~clay/MexWeb/MexSubduction.html	Mexico	10.7909/C3RN35SP
TP	Rete di monitoraggio microsismico installata presso la concessione Gorgoglione	TOTAL E&P ITALIA S.P.A.	Italy		Italy	
TQ	Taiwan multi-parametric environmental seismic monitoring network	Deutsches GeoForschungsZentrum GFZ	Germany		Taiwan	10.14470/GD993669
TR	Eastern Caribbean Seismograph Network	University of the West Indies, Seismic Research Centre	Trinidad and Tobago		Eastern Caribbean	
TS	TERRAscope (Southern California Seismic Network)	California Institute of Technology	United States of America		United States of America	
TT	Seismic Network of Tunisia	Institut National de la Météorologie, Tunis	Tunisia		Tunisia	
TU	Turkish National Seismic Network	Disaster and Emergency Management Authority	Türkiye	https://deprem.afad.gov.tr/istasyonlar?lang=en	Türkiye	10.7914/SN/TU
TV	INGV experiments network	Istituto Nazionale di Geofisica e Vulcanologia	Italy		Italy	
TW	Broadband Array in Taiwan for Seismology	Institute of Earth Sciences, Academia Sinica, Taiwan	Taiwan	http://bats.earth.sinica.edu.tw/	Taiwan	10.7914/SN/TW
TX	Texas Seismological Network	Bureau of Economic Geology, The University of Texas at Austin	United States of America		United States, Texas	10.7914/SN/TX
TY	Dam Safety Monitoring Network	Tennessee Valley Authority	United States of America		United States of America	10.7914/SN/TY
TZ	Ol Doinyo Lengai, TZ Volcano Monitoring	Colgate University	United States of America		Tanzania	10.7914/SN/TZ