It measures ICMP RTT between Mudfish nodes using IP address you typed.

It measures TCP based RTT between Mudfish nodes using IP address and port you typed.

It shows the result of DNS resolving on mudfish nodes.

The mudfish nodes

AE Middle East (Dubai - Bamboozle) AE Middle East (Dubai - Orixcom) AU Oceania (Brisbane - BinaryLane)
AU Oceania (Melbourne - BinaryLane) AU Oceania (Melbourne - RansomIT) AU Oceania (Perth - DCWest)
AU Oceania (Sydney - Amazon EC2) AU Oceania (Sydney - BinaryLane) AU Oceania (Sydney - Equinix)
AU Oceania (Sydney - HostHatch) AU Oceania (Sydney - HostUS) AU Oceania (Sydney - Vultr)
BG Europe (Bulgaria - Dagroup) BZ South America (Sao Paulo - Amazon EC2) BZ South America (Sao Paulo - Azure)
BZ South America (Sao Paulo - Vig28) CA East (Montreal - OVH 2) CA East (Montreal - OVH 3)
CA East (Montreal - OVH) CA East (Toronto - DigitalOcean) CA East (Toronto - LunaNode)
CH Europe (Zurich - GlobalAXS) CN Asia (Beijing - Aliyun) CN Asia (Beijing - Xirang)
CN Asia (Guangdong - XSDNS) CN Asia (Hangzhou - Aliyun) CN Asia (Qingdao - Aliyun)
CN Asia (Shanghai - Aliyun) CN Asia (Shanghai - XSDNS) CN Asia (Shenzhen - Aliyun)
CN Asia (Shenzhen - GSHLNET) CN Asia (Zhengzhou - GAINET) CN Asia (Zhengzhou - ZZGIANT)
DE Europe (Germany - Amazon EC2) DE Europe (Germany - BnK) DE Europe (Germany - DigitalOcean 2)
DE Europe (Germany - DigitalOcean) DE Europe (Germany - GHOSTnet) DE Europe (Germany - Hetzner)
DE Europe (Germany - IdealHosting 2) DE Europe (Germany - IdealHosting) DE Europe (Germany - LeaseWeb 2)
DE Europe (Germany - LeaseWeb 3) DE Europe (Germany - LeaseWeb) DE Europe (Germany - Linode)
DE Europe (Germany - PieLayer) DE Europe (Germany - Serverhub) DE Europe (Germany - Vultr)
EG Middle East (Cairo - CityNet) ES Europe (Barcelona - Giner) ES Europe (Madrid - Giner)
FI Europe (Espoo - Mediam) FR Europe (Paris - Choopa) FR Europe (Paris - Pump)
HK Asia (Hong Kong - 36cloud) HK Asia (Hong Kong - Aliyun) HK Asia (Hong Kong - Azure 2)
HK Asia (Hong Kong - Azure 3) HK Asia (Hong Kong - Azure 4) HK Asia (Hong Kong - Azure 5)
HK Asia (Hong Kong - Azure) HK Asia (Hong Kong - CLDR) HK Asia (Hong Kong - HostHatch)
HK Asia (Hong Kong - HostUS 2) HK Asia (Hong Kong - HostUS) HK Asia (Hong Kong - Klayer)
HK Asia (Hong Kong - SoftLayer) HK Asia (Hong Kong - TinMok 2) HK Asia (Hong Kong - TinMok 3)
HU Europe (Budapest - ATW) HU Europe (Budapest - INVITEL) HU Europe (Budapest - ServerAstra)
ID Asia (Jakarta - CLDREU) ID Asia (Jakarta - ServerKeren) ID Asia (Sukabumi - CloudHost)
IL Middle East (Tel Aviv - EDIS) IN Asia (Bangalore - DigitalOcean 2) IN Asia (Bangalore - DigitalOcean)
IN Asia (Mumbai - Amazon EC2) IN Asia (Mumbai - Zappie) IN Asia (Pune - Leapswitch)
JP Asia (Hokkaido - SakuraNet) JP Asia (Kitakyushu - IDCF) JP Asia (Osaka - Azure)
JP Asia (Osaka - FreeBit) JP Asia (Osaka - TinMok 3) JP Asia (Tokyo - Amazon EC2 2)
JP Asia (Tokyo - Azure 2) JP Asia (Tokyo - Azure) JP Asia (Tokyo - Choopa)
JP Asia (Tokyo - ConoHa 2) JP Asia (Tokyo - ConoHa 3) JP Asia (Tokyo - ConoHa 5)
JP Asia (Tokyo - ConoHa) JP Asia (Tokyo - Equinix) JP Asia (Tokyo - GMO3)
JP Asia (Tokyo - GMO4) JP Asia (Tokyo - Google 2) JP Asia (Tokyo - Google 3)
JP Asia (Tokyo - Google 4) JP Asia (Tokyo - Google) JP Asia (Tokyo - IDCF)
JP Asia (Tokyo - KK-NET 2) JP Asia (Tokyo - KK-NET) JP Asia (Tokyo - Linode1 IDC)
JP Asia (Tokyo - Linode2 IDC) JP Asia (Tokyo - Linode3 IDC) JP Asia (Tokyo - Linode4 IDC)
JP Asia (Tokyo - NTT 2) JP Asia (Tokyo - NTT 3) JP Asia (Tokyo - NTT)
JP Asia (Tokyo - SakuraNet 2) JP Asia (Tokyo - SakuraNet) JP Asia (Tokyo - SoftBank 2)
JP Asia (Tokyo - SoftBank) JP Asia (Tokyo - TinMok 2) JP Asia (Tokyo - TinMok 3)
JP Asia (Tokyo - Yahoo Japan) KR Asia (S. Korea - Amazon EC2) KR Asia (S. Korea - broadNnet 2)
KR Asia (S. Korea - Dacom IDC) KR Asia (S. Korea - Dacom2 IDC) KR Asia (S. Korea - Dacom3 IDC)
KR Asia (S. Korea - Dacom4 IDC) KR Asia (S. Korea - Dognet 3) KR Asia (S. Korea - Dognet 4)
KR Asia (S. Korea - EstNOC) KR Asia (S. Korea - GNJ IDC) KR Asia (S. Korea - GNJ IDC) 2
KR Asia (S. Korea - HCLC 2 IDC) KR Asia (S. Korea - HCLC IDC) KR Asia (S. Korea - KT1 IDC)
KR Asia (S. Korea - KT2 IDC) KR Asia (S. Korea - KT3 IDC) KR Asia (S. Korea - KT4 IDC)
KR Asia (S. Korea - KT5 IDC) KR Asia (S. Korea - KT6 IDC) KR Asia (S. Korea - KT7 IDC)
KR Asia (S. Korea - Sejong Telecom 2) KR Asia (S. Korea - Sejong Telecom 3) KR Asia (S. Korea - Sejong Telecom 4)
KR Asia (S. Korea - Sejong Telecom 5) KR Asia (S. Korea - Xpeed) LT Europe (Vilnius - RackRay)
MD Europe (Chisinau - MivoCloud) MX South America (Mexico City - OneProvider) MY Asia (Kuala Lumpur - Piradius 5)
NL Europe (Amsterdam - DigitalOcean) NL Europe (Amsterdam - HostSailor) NL Europe (Amsterdam - RamNode)
NO Europe (Oslo - TerraHost) NZ Oceania (Auckland - HDNET) - PBE PH Asia (Philippines - ETPI)
PH Asia (Philippines - IPVG 2) PH Asia (Philippines - IPVG) PL Europe (Poland - HitMe)
PL Europe (Poland - HosTeam) PL Europe (Poland - Livenet) RU Europe (Khabarovsk - GCore)
RU Europe (Moscow - HostKey) RU Europe (Moscow - MediaSoft) RU Europe (Moscow - TCTEL)
RU Europe (Novosibirsk - JSC) RU Europe (St. Petersburg - vStoike) SE Europe (Falkenberg - Portlane)
SE Europe (Stockholm - Nix) SE Europe (Stockholm - YourServer) SG Asia (Singapore - Amazon EC2)
SG Asia (Singapore - AsiaServerHost) SG Asia (Singapore - DigitalOcean) SG Asia (Singapore - LeaseWeb)
SG Asia (Singapore - Linode) SG Asia (Singapore - OneAsiaHost) SG Asia (Singapore - OneAsiaHost) 2
SG Asia (Singapore - SecureAX) 1 SG Asia (Singapore - SecureAX) 2 SG Asia (Singapore - ServerKeren)
SG Asia (Singapore - SimplerCloud) SG Asia (Singapore - SYN) SG Asia (Singapore - VPSNine)
SG Asia (Singapore - Vultr 2) SG Asia (Singapore - Vultr) TH Asia (Bangkok - CloudHosting)
TR Europe (Istanbul - CityNet) TW Asia (Taiwan - APNT) TW Asia (Taiwan - Google 2)
TW Asia (Taiwan - Google 3) TW Asia (Taiwan - Google) TW Asia (Taiwan - HostingInside 1)
TW Asia (Taiwan - HostingInside 2) UK Europe (Coventry - AboveClouds) UK Europe (London - DigitalOcean)
UK Europe (London - Ormuco) UK Europe (Manchester - UKFast) US Central (Dallas, TX - ColoCrossing)
US Central (Dallas, TX - DrServer) US Central (Dallas, TX - HostUS) US Central (Dallas, TX - HudsonValley)
US Central (Dallas, TX - Incero LLC) US Central (Dallas, TX - Secure Dragon) US Central (Denver, CO - Mean Servers)
US Central (Houston, TX - Oplink) US Central (Lombard, IL - Continuum LLC) US Central (Phoenix, AZ - Inception)
US Central (Phoenix, AZ - SingleHop) US East (Atlanta - RamNode) US East (Atlanta, GA - ColoCrossing)
US East (Chicago - ColoCrossing) US East (Chicago - Nodisto) US East (Chicago - Serverhub)
US East (Chicago - Tzulo) US East (Herndon, VA - Zeniva) US East (Jacksonville - GoRack)
US East (Miami - QudraNet 2) US East (Miami - QudraNet) US East (New Jersey - FranTech)
US East (New Jersey - RamNode) US East (New York - Digital Ocean 2) US East (New York - Digital Ocean 3)
US East (New York - Digital Ocean) US East (Orlando - Nordisto) US East (Philadelphia - NetStack)
US East (Washington DC - HostUS) US West (Fremont, CA - KLAYER 2) US West (Fremont, CA - KLAYER)
US West (Fremont, CA - Linode) US West (Las Vegas - Foroquimica) US West (Las Vegas - FranTech)
US West (Las Vegas - Versaweb) US West (Los Angeles - Colo) US West (Los Angeles - ColoCrossing2)
US West (Los Angeles - Enzu) US West (Los Angeles - HostUS) US West (Los Angeles - Pump)
US West (Los Angeles - QudraNet 2) US West (Los Angeles - QudraNet 3) US West (Los Angeles - QudraNet 4)
US West (Los Angeles - QudraNet 5) US West (Los Angeles - QudraNet) US West (Los Angeles - RamNode)
US West (Los Angeles - SYN) US West (Los Angeles - VIG28 2) US West (Los Angeles - Vivid)
US West (N. California - Amazon EC2) US West (Ogden, UT - GorillaServers) US West (San Francisco - Digital Ocean 2)
US West (San Francisco - Digital Ocean) US West (San Jose - ColoCrossing) US West (Seattle - RamNode 2)
US West (Seattle - RamNode) US West (Seattle - Serverhub) US West (Seattle - Vultr)
VN Asia (Vietnam - GreenCloud) VN Asia (Vietnam - Viettel) VN Asia (Vietnam - VinaHost 2)
VN Asia (Vietnam - VinaHost) ZA South Africa (Johannesburg - Host1plus) ZA South Africa (Johannesburg - Samrand) - PBE