For debugging only
This list is intended to help troubleshoot DNS issues. Do not configure these servers as your DNS resolver unless you know and trust the operator. A DNS resolver can log the domains you look up and can manipulate or block DNS responses.
Instead, use your ISP's default DNS server, or a global DNS server operated by an organisation you trust.
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181.193.97.50Checked 1 hour ago
Instituto Costarricense de Electricidad y Telecom.
AS11830
Curridabat
9.9139, -84.0359
94% uptime
|176msMedian ping from Nuremberg, Germany|1msJitter (1 standard deviation)498msQuery time (median DNS query time - median ping) -
168.181.162.124Checked 1 hour ago
STREET FIBER S.A.
AS264686
Desamparados
9.8975, -84.0635
94% uptime
|174msMedian ping from Nuremberg, Germany|3msJitter (1 standard deviation)203msQuery time (median DNS query time - median ping) -
200.91.148.103Checked 4 hours ago
Instituto Costarricense de Electricidad y Telecom.
AS11830
Guadalupe
9.9481, -84.0567
88% uptime
|180msMedian ping from Nuremberg, Germany|1msJitter (1 standard deviation)492msQuery time (median DNS query time - median ping) -
190.211.101.158Checked 7 hours ago
Cooperativa de Electrificación Rural de San Carlos R.L. (Coopelesca R.L.)
AS262145
La Virgen
10.4017, -84.1335
100% uptime
|191msMedian ping from Nuremberg, Germany|1msJitter (1 standard deviation)431msQuery time (median DNS query time - median ping) -
181.193.49.126Checked 4 hours ago
Instituto Costarricense de Electricidad y Telecom.
AS11830
Liberia
10.6352, -85.4378
88% uptime
|190msMedian ping from Nuremberg, Germany|0msJitter (1 standard deviation)530msQuery time (median DNS query time - median ping) -
168.228.49.49Checked 4 hours ago
Cooperativa de Electrificación Rural de San Carlos R.L. (Coopelesca R.L.)
AS262145
Quesada
10.3266, -84.4320
100% uptime
|180msMedian ping from Nuremberg, Germany|10msJitter (1 standard deviation)430msQuery time (median DNS query time - median ping) -
168.228.50.11Checked 4 hours ago
Cooperativa de Electrificación Rural de San Carlos R.L. (Coopelesca R.L.)
AS262145
Quesada
10.3266, -84.4320
94% uptime
|175msMedian ping from Nuremberg, Germany|0msJitter (1 standard deviation)449msQuery time (median DNS query time - median ping) -
168.228.50.143Checked 4 hours ago
Cooperativa de Electrificación Rural de San Carlos R.L. (Coopelesca R.L.)
AS262145
Quesada
10.3266, -84.4320
100% uptime
|179msMedian ping from Nuremberg, Germany|1msJitter (1 standard deviation)448msQuery time (median DNS query time - median ping) -
181.193.24.34Checked 1 hour ago
Instituto Costarricense de Electricidad y Telecom.
AS11830
Río Segundo
10.0038, -84.1872
100% uptime
|190msMedian ping from Nuremberg, Germany|1msJitter (1 standard deviation)514msQuery time (median DNS query time - median ping) -
186.96.91.52Checked 4 hours ago
Telefonica de Costa Rica TC, SA
AS262202
San Isidro
9.3674, -83.6971
100% uptime
|162msMedian ping from Nuremberg, Germany|0msJitter (1 standard deviation)394msQuery time (median DNS query time - median ping) -
190.14.152.182Checked 46 seconds ago
R&H International Telecom Services SA.
AS52356
San Isidro
9.3674, -83.6971
100% uptime
|177msMedian ping from Nuremberg, Germany|2msJitter (1 standard deviation)116msQuery time (median DNS query time - median ping) -
45.65.188.138Checked 3 hours ago
Comunicaciones Metropolitanas METROCOM, S.A.
AS266853
San José
9.9364, -84.0693
100% uptime
|168msMedian ping from Nuremberg, Germany|1msJitter (1 standard deviation)113msQuery time (median DNS query time - median ping) -
45.65.188.231Checked 2 hours ago
Comunicaciones Metropolitanas METROCOM, S.A.
AS266853
San José
9.9364, -84.0693
94% uptime
|174msMedian ping from Nuremberg, Germany|2msJitter (1 standard deviation)242msQuery time (median DNS query time - median ping) -
177.93.31.10Checked 1 hour ago
Telecable Economico S.A.
AS52263
San José
9.9339, -84.0849
100% uptime
|168msMedian ping from Nuremberg, Germany|1msJitter (1 standard deviation)280msQuery time (median DNS query time - median ping) -
177.93.31.25Checked 1 hour ago
Telecable Economico S.A.
AS52263
San José
9.9339, -84.0849
100% uptime
|176msMedian ping from Nuremberg, Germany|2msJitter (1 standard deviation)214msQuery time (median DNS query time - median ping) -
179.189.223.197Checked 5 hours ago
COLUMBUS NETWORKS DE COSTA RICA SOCIEDAD DE RESPONSABILIDAD LIMITADA
AS263785
San José
9.9339, -84.0849
99% uptime
|174msMedian ping from Nuremberg, Germany|13msJitter (1 standard deviation)329msQuery time (median DNS query time - median ping) -
190.7.212.236Checked 6 hours ago
American Data Networks
AS27876
San José
9.9339, -84.0849
100% uptime
|168msMedian ping from Nuremberg, Germany|1msJitter (1 standard deviation)56msQuery time (median DNS query time - median ping) -
190.7.217.234Checked 1 hour ago
American Data Networks
AS27876
San José
9.9339, -84.0849
100% uptime
|168msMedian ping from Nuremberg, Germany|2msJitter (1 standard deviation)328msQuery time (median DNS query time - median ping) -
201.191.29.239Checked 54 minutes ago
Instituto Costarricense de Electricidad y Telecom.
AS11830
San José
9.9339, -84.0849
88% uptime
|178msMedian ping from Nuremberg, Germany|1msJitter (1 standard deviation)436msQuery time (median DNS query time - median ping) -
201.192.143.63Checked 6 hours ago
Instituto Costarricense de Electricidad y Telecom.
AS11830
San José
9.9339, -84.0849
99% uptime
|175msMedian ping from Nuremberg, Germany|2msJitter (1 standard deviation)276msQuery time (median DNS query time - median ping) -
201.206.158.219Checked 5 hours ago
Instituto Costarricense de Electricidad y Telecom.
AS11830
San José
9.9339, -84.0849
98% uptime
|182msMedian ping from Nuremberg, Germany|1msJitter (1 standard deviation)220msQuery time (median DNS query time - median ping) -
38.210.161.48Checked 3 hours ago
Comunicaciones Metropolitanas METROCOM, S.A.
AS266853
San Rafael
9.9283, -84.1354
88% uptime
|169msMedian ping from Nuremberg, Germany|1msJitter (1 standard deviation)199msQuery time (median DNS query time - median ping) -
190.149.152.26Checked 2 hours ago
TELECOMUNICACIONES DE GUATEMALA, SOCIEDAD ANONIMA
AS14754
San Rafael
9.9283, -84.1354
88% uptime
|179msMedian ping from Nuremberg, Germany|1msJitter (1 standard deviation)424msQuery time (median DNS query time - median ping) -
200.192.238.52Checked 3 hours ago
GCI SERVICE PROVIDER S.A.
AS263248
San Rafael
9.9283, -84.1354
94% uptime
|177msMedian ping from Nuremberg, Germany|1msJitter (1 standard deviation)390msQuery time (median DNS query time - median ping)