171 probes · 6 continents · IPv4 + IPv6

171 Monitoring Checkpoints

Dedicated monitoring probes across six continents in over 60 countries

44 North America 90 Europe 7 South America 23 Asia 7 Oceania 5 Middle East 3 Africa
Dedicated, not shared IPs IPv4 + IPv6 reachability Whitelist-ready IP list
Worldwide coverage

The world's largest monitoring checkpoint network

171 worldwide monitoring checkpoints across six continents

North America
44 checkpoints
Europe
83 checkpoints
Africa
3 checkpoints
South America
7 checkpoints
Asia
27 checkpoints
Oceania
7 checkpoints
North America
44 checkpoints
South America
7 checkpoints
Africa
3 checkpoints
Europe
83 checkpoints
Oceania
7 checkpoints
Asia
27 checkpoints
Probes & IPs

The complete list of our monitoring probe locations

We built this extensive network of monitoring checkpoints to stay as close to our customers as possible. Clients can choose from any of these locations to get the best website monitoring service on the market.

A plain-text list of IP addresses for whitelisting is available here.

North America

44 probes 3 countries
Country City Status IPv4 address IPv6 address
United States San Francisco (CA) Alive 137.184.94.36 —
Fremont (CA) Alive 45.56.89.150 2600:3c01::f03c:93ff:fe97:7775
New York City (NY) Alive 74.119.194.122 —
Dallas (TX) Alive 209.145.48.145 —
Orlando (FL) Alive 202.78.170.252 2a03:90c0:514:2905::699
Atlanta (GA) Alive 155.138.203.9 2001:19f0:5401:82b:5400:3ff:fef1:d578
Austin (TX) Alive 208.81.246.2 —
Boston (MA) Alive 192.34.85.32 —
Chicago (IL) Alive 154.12.235.24 —
Denver (CO) Alive 192.73.242.94 —
Honolulu (HI) Alive 208.72.155.80 2001:19f0:c000:c41f:5400:3ff:fef3:9dc
Houston (TX) Alive 216.230.231.22 —
Las Vegas (NV) Alive 5.226.169.22 —
Los Angeles (CA) Alive 149.248.7.54 2001:19f0:6001:bf:5400:3ff:fef1:d58c
Miami (FL) Alive 45.77.166.217 2001:19f0:9002:1670:5400:3ff:fef3:a1a
Newark (DE) Alive 64.115.146.31 —
Phoenix (AZ) Alive 184.95.56.23 —
Portland (OR) Alive 45.76.247.38 2001:19f0:8001:1063:5400:4ff:fe1a:ed65
Sacramento (CA) Alive 208.17.90.75 —
San Diego (CA) Alive 92.223.30.35 2a03:90c0:1a5::b2
Seattle (WA) Alive 154.53.63.67 —
Tampa (FL) Alive 162.252.175.30 2605:3b80:11:4180::1
Washington D.C. Alive 205.143.207.95 —
New Jersey (NJ) Alive 207.246.87.204 2001:19f0:5:60c0:5400:3ff:fef1:eda6
Ashburn (VA) Alive 45.82.161.53 2a03:90c0:295::141
Marietta (GA) Alive 31.13.213.16 2a03:90c0:215::5a
Detroit (MI) Alive 162.247.76.194 —
Philadelphia (PA) Alive 65.79.190.94 —
Santa Clara (CA) Alive 92.38.149.41 —
Silicon Valley (CA) Alive 45.32.139.74 2001:19f0:ac01:6a1:5400:3ff:fef1:ed87
Hartford (CT) Alive 159.247.33.53 —
Naperville (IL) Alive 2.56.222.31 2a03:90c0:133:2903::c9
Indianapolis (IN) Alive 168.214.152.25 —
Milwaukee (WI) Alive 137.220.57.16 2001:19f0:5c00:1909:5400:4ff:fe1a:ecc2
Baltimore (MD) Alive 162.255.162.52 —
Fort Worth (TX) Alive 155.138.241.31 2001:19f0:6401:d29:5400:4ff:fe1a:ed16
Cleveland (OH) Alive 65.25.83.5 —
Salt Lake City (UT) Alive 155.97.137.59 —
Canada Toronto Alive 158.69.63.98 2607:5300:60:919f::
Montreal Alive 158.69.63.98 2607:5300:201:3100::46eb
Vancouver Alive 192.71.227.46 2605:3b80:cad:1a86::1
Toronto #2 Alive 85.208.108.19 —
Mexico Mexico City Alive 216.238.71.251 2001:19f0:b400:118c:5400:3ff:fef1:d5c5
Santiago de Querétaro Alive 89.223.88.11 2a03:90c0:545::a

Europe

90 probes 39 countries
Country City Status IPv4 address IPv6 address
Austria Vienna Alive 151.236.8.40 2a03:f80:ed15:70f2::1
Graz Alive 185.26.237.160 2a03:f80:ed31:8878::1
Belgium Brussels Alive 192.71.249.132 2a03:f80:32:ee3a::1
Antwerpen Alive 95.164.62.8 2a12:6500:0:5::1
Gent Alive 176.62.160.65 —
Bulgaria Sofia Alive 188.211.166.62 2a03:f80:359:b2c4::1
Denmark Aarhus Alive 93.160.88.253 —
Odense Alive 95.164.10.36 2a13:6300:0:1a::1
Copenhagen Alive 192.36.27.88 2a03:f80:45:231a::1
Finland Helsinki Alive 89.40.105.99 2a03:f80:358:f149::1
United Kingdom London Alive 51.77.119.24 2001:41d0:800:1d18::
London #2 Alive 51.75.170.220 2001:41d0:801:2000::2fd3
Edinburgh Alive 194.63.145.165 2a09:cd40:f:43b3::1
Glasgow Alive 78.141.198.130 2001:19f0:7402:1512:5400:3ff:fefc:2448
Manchester Alive 95.164.37.131 —
Canary Wharf Alive 91.132.95.21 2a03:f80:4416:6e7c::1
Portsmouth Alive 149.102.128.13 —
Sheffield Alive 37.61.229.225 2a03:90c0:146::2012
Bristol Alive 178.128.45.12 —
Germany Berlin Alive 94.176.182.125 2a05:8280:f:4399::1
Frankfurt Alive 94.131.111.229 —
Bremen Alive 82.198.223.25 —
Cologne Alive 51.68.180.180 2001:41d0:700:1bb4::
Düsseldorf Alive 194.163.128.65 —
Hamburg Alive 212.53.132.25 —
Leipzig Alive 78.46.1.53 —
Munich Alive 80.190.158.99 —
Nuremberg Alive 54.38.158.248 2001:41d0:701:1100::a87
Falkenstein Alive 188.40.52.12 —
Dresden Alive 89.15.2.21 —
Erfurt Alive 62.157.212.26 —
Stuttgart Alive 149.154.159.228 2a03:f80:49:a5dc::1
Greece Athens Alive 212.52.16.9 2a03:f80:30:1667::1
Ukraine Kyiv Alive 91.239.65.45 2a03:90c0:277::1c1
Hungary Budapest Alive 5.181.77.92 2a03:90c0:395::fa
Ireland Dublin Alive 193.57.138.47 —
Luxembourg Luxembourg Alive 45.12.144.56 —
Netherlands Amsterdam Alive 93.115.18.6 2a0c:b9c0:f:4413::1
Haarlem Alive 78.141.214.15 2001:19f0:5001:d74:5400:4ff:fe30:bd7b
Rotterdam Alive 151.236.14.167 2a03:f80:31:91dd::1
Utrecht Alive 45.12.145.125 —
Norway Bjerke Alive 95.164.84.180 —
Oslo Alive 194.68.32.40 2a03:f80:47:771b::1
Poland Warsaw Alive 79.137.70.228 2001:41d0:602:2e4::
Poznan Alive 151.236.25.95 2a03:f80:48:c6::1
Łódź Alive 77.91.102.45 2a09:7c40:0:13::1
Kraków Alive 37.235.48.147 2a03:f80:48:be01::1
Portugal Lisbon Alive 5.182.39.59 —
Porto Alive 80.251.169.141 —
Romania Bucharest Alive 45.82.102.118 2a03:90c0:4c0:2903:ffff::329
Russia Moscow Alive 213.111.187.87 2a03:f80:7:187b::1
Saint Petersburg Alive 192.121.171.45 2a03:f80:70:bb7c::1
Moscow #2 Alive 103.136.43.179 —
Moscow #3 Alive 38.60.218.244 —
Slovakia Bratislava Alive 5.180.55.83 2a13:6303:0:2::1
Slovenia Ljubljana Alive 45.83.131.192 —
Lithuania Vilnius Alive 45.12.129.189 —
Latvia Riga Alive 45.133.216.239 2a09:7c43:0:5::1
Estonia Tallinn Alive 89.40.104.2 2a03:f80:372:a85e::1
Croatia Zagreb Alive 45.136.129.139 —
Spain Barcelona Alive 94.131.117.107 2a11:4c00:0:3::1
Madrid Alive 193.24.235.48 2a09:cd45:1:87a4::1
Seville Alive 37.235.53.104 2a00:1d70:ed15:297f::1
France Strasbourg Alive 152.228.133.230 2001:41d0:404:200::81f4
Paris Alive 185.170.214.187 —
Lyon Alive 158.255.215.105 2a03:f80:33:d863::1
Marseille Alive 94.232.247.26 2a0b:cf47:0:76::1
Roubaix Alive 51.255.95.82 2001:41d0:1004:2552::
Gravelines Alive 162.19.66.220 2001:41d0:304:200::33eb
Italy Rome Alive 5.253.43.131 —
Milan Alive 89.41.172.28 2a03:90c0:1b5:ffff::cd:1
Bologna Alive 5.90.1.4 —
Turin Alive 5.89.17.34 —
Czech Republic Prague Alive 185.122.186.154 2a03:f80:420:54ca::1
Sweden Stockholm Alive 185.243.215.192 —
Malmö Alive 70.34.204.185 2a05:f480:2000:231d:5400:4ff:fe5a:925c
Göteborg Alive 178.73.210.249 2a00:1a28:1251:b2da::1
Uppsala Alive 37.221.126.154 2a11:3802:0:b::1
Switzerland Bern Alive 159.144.158.96 —
Geneva Alive 5.182.36.206 2a11:4c03:0:f::1
Zurich Alive 178.209.50.220 2a02:418:6a04:629d::1
Turkey Istanbul Alive 103.215.218.239 2a03:90c0:166:174::1
Moldova Chisinau Alive 45.153.124.189 2a03:f80:373:a99d::1
North Macedonia Skopje Alive 45.83.141.47 —
Albania Tirana Alive 45.15.170.104 2a14:3084::2e0
Serbia Belgrade Alive 45.15.160.219 —
Liechtenstein Vaduz Alive 45.15.167.46 —
Iceland Reykjavik Alive 45.83.21.49 —
Armenia Yerevan Alive 93.115.240.174 2a03:90c0:5f1:2903::11f1
Bosnia and Herzegovina Sarajevo Alive 45.8.147.28 2a11:3803::12a

South America

7 probes 5 countries
Country City Status IPv4 address IPv6 address
Argentina Buenos Aires Alive 200.42.136.21 —
Brazil Brasília Alive 45.82.245.126 —
Sao Paolo Alive 216.238.110.248 2001:19f0:b800:183a:5400:3ff:fef1:847a
Fortaleza Alive 5.252.24.165 2a03:90c0:525::142
Chile Santiago Alive 45.82.249.41 2a14:3086::15a
Peru Lima Alive 87.121.99.218 2a03:90c0:555::662
Panama Panama City Alive 186.72.79.24 —

Asia

23 probes 13 countries
Country City Status IPv4 address IPv6 address
Japan Tokyo Alive 5.253.41.163 —
Nagoya Alive 155.133.7.23 —
Osaka Alive 64.176.38.5 2401:c080:3800:2e89:5400:4ff:fe4d:6457
Sapporo Alive 103.19.2.131 —
Singapore Singapore Alive 51.79.240.138 2402:1f00:8000:800::281a
Singapore #2 Alive 194.233.94.210 —
China Beijing Alive 39.105.113.253 —
Shanghai Alive 43.240.124.23 —
Shenzen Alive 158.255.208.25 2a03:f80:852:a0b1::1
Kazakhstan Almaty Alive 89.44.193.116 —
Astana Alive 94.131.2.254 —
Vietnam Hanoi Alive 38.54.30.93 —
Hong Kong Hong Kong Alive 89.223.95.88 2a03:90c0:2c8::211
India Chennai Alive 14.139.160.70 —
Bengalore Alive 128.199.17.77 —
Mumbai Alive 65.20.67.148 2401:c080:2400:1268:5400:3ff:fef1:d5af
New Delhi Alive 45.89.106.119 —
Indonesia Jakarta Alive 38.60.191.155 —
South Korea Seoul Alive 45.82.246.229 —
Malaysia Kuala Lumpur Alive 45.128.54.38 2a14:3087::8d2
Philippines Manila Alive 38.54.36.13 —
Taiwan Taipei Alive 38.54.107.219 —
Thailand Bangkok Alive 38.54.33.193 —

Oceania

7 probes 2 countries
Country City Status IPv4 address IPv6 address
Australia Sydney Alive 139.99.236.25 2402:1f00:8100:400::1996
Adelaide Alive 146.185.214.151 2a03:90c0:105::55
Brisbane Alive 172.105.180.165 2400:8907::f03c:93ff:fecb:6104
Canberra Alive 45.15.185.181 2a11:7e07::51a
Melbourne Alive 67.219.101.98 2401:c080:2000:1575:5400:3ff:fef1:d5b6
Perth Alive 154.26.155.233 —
New Zealand Auckland Alive 45.15.140.36 2a14:3085::a2

Middle East

5 probes 5 countries
Country City Status IPv4 address IPv6 address
Bahrain Manamah Alive 87.237.196.10 —
Israel Tel Aviv Alive 5.188.227.29 2a03:90c0:1e7::c1
Saudi Arabia Riyadh Alive 95.177.214.34 —
United Arab Emirates Dubai Alive 38.54.75.244 —
Qatar Doha Alive 213.130.121.18 —

Africa

3 probes 2 countries
Country City Status IPv4 address IPv6 address
Egypt Cairo Alive 213.158.188.34 —
South Africa Johannesburg Alive 85.234.81.30 2a03:90c0:1f6::c9
Cape Town Alive 197.98.12.17 —
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