How do I check if a TCP port is open online?

Enter your server's IP address or domain followed by a colon and the port number (e.g. 1.1.1.1:80 or example.com:443) and run a TCP check. The tool attempts a TCP handshake from 65+ global nodes and reports whether each connection succeeded, was refused, or timed out.

What is the difference between a port being refused versus timing out?

A refused connection (TCP RST) means the port is actively closed — the server replied to reject the connection. A timeout means no reply was received at all, which typically indicates a firewall is silently dropping packets before they reach the server or application.

Which TCP ports can I test?

Any valid TCP port from 1 to 65535. Common examples include port 80 (HTTP), 443 (HTTPS), 22 (SSH), 25 (SMTP), 3306 (MySQL), 5432 (PostgreSQL), and 3389 (RDP). No login or special permissions required — the check only verifies whether the TCP handshake completes.

My port is open locally but fails from external nodes — why?

If a port works locally but fails from external nodes, something between the internet and your server is blocking it — commonly a cloud security group, iptables rule, upstream ISP filter, or geoblocking policy. Running the check from multiple regions helps identify whether the block is global or specific to certain countries or ASNs.

تقرير لـ www.tibia.com:80

Info Ping HTTP TCP UDP MTR DNS

فحص TCP www.tibia.com:80

تم الفحص في Jul 21, 2026 19:45:36 (UTC) |

| افحص تاني |

المكان (Location)	النتيجة	الوقت	عنوان الـ IP
Albania, Tirana	Connected	28.0 ms	104.18.114.8
Australia, Sydney	Connected	1.0 ms	104.18.185.8
Bosnia and Herzegovina, Novi Travnik	Connected	17.0 ms	104.18.114.8
Bulgaria, Sofia	Connected	1.0 ms	104.18.185.8
Brazil, São Paulo	Connected	2.0 ms	104.18.114.8
Canada, Montreal	Connected	8.0 ms	104.18.114.8
Switzerland, Bern	Connected	2.0 ms	104.18.114.8
Switzerland, Zurich	Connected	3.0 ms	104.18.185.8
Chile, Santiago	Connected	48.0 ms	104.18.114.8
China, Hohhot	Connected	206.0 ms	104.18.114.8
Germany, Nuernberg	Connected	5.0 ms	104.18.185.8
Germany, Frankfurt am Main	Connected	1.0 ms	104.18.185.8
Germany, Limburg	Connected	2.0 ms	104.18.114.8
Germany, Frankfurt am Main	Connected	1.0 ms	104.18.114.8
Germany, Frankfurt am Main	Connected	2.0 ms	104.18.114.8
Germany, Frankfurt am Main	Connected	2.0 ms	104.18.114.8
Germany, Koblenz	Connected	5.0 ms	104.18.185.8
Spain, Bilbao	Connected	55.0 ms	104.18.114.8
Spain, Barcelona	Connected	31.0 ms	104.18.185.8
Finland, Helsinki	Connected	5.0 ms	104.18.114.8
Finland, Helsinki	Connected	2.0 ms	104.18.114.8
France, Gravelines	Connected	5.0 ms	104.18.185.8
France, Paris	Connected	10.0 ms	104.18.185.8
United Kingdom, London	Connected	6.0 ms	104.18.114.8
Georgia, Tbilisi	ERROR	-	www.tibia.com
Hong Kong, Hong Kong	Connected	1.0 ms	104.18.185.8
Croatia, Zagreb	Connected	25.0 ms	104.18.114.8
Hungary, Budapest	Connected	15.0 ms	104.18.114.8
Israel, Petach Tikwa	Connected	1.0 ms	104.18.114.8
Israel, Netanja	Connected	1.0 ms	104.18.114.8
India, New Delhi	Connected	1.0 ms	104.18.185.8
Iceland, Reykjavik (Miðborg)	Connected	2.0 ms	104.18.114.8
Italy, Como	Connected	1.0 ms	104.18.185.8
South Korea, Seoul	Connected	1.0 ms	104.18.114.8
Lithuania, Pilaite	Connected	26.0 ms	104.18.185.8
Latvia, Riga	Connected	31.0 ms	104.18.114.8
Netherlands, Amsterdam	Connected	2.0 ms	104.18.185.8
Netherlands, Amsterdam	Connected	3.0 ms	104.18.114.8
Netherlands, Amsterdam	Connected	2.0 ms	104.18.185.8
Netherlands, Amsterdam	Connected	31.0 ms	104.18.185.8
Netherlands, Eygelshoven	Connected	7.0 ms	104.18.185.8
Norway, Oslo	Connected	0.0 ms	104.18.185.8
Poland, Warsaw	Connected	22.0 ms	104.18.185.8
Romania, Bacău	Connected	39.0 ms	104.18.185.8
Romania, Bucharest	Connected	8.0 ms	104.18.114.8
Serbia, Belgrade	Connected	5.0 ms	104.18.114.8
Russia, Moscow	Connected	24.0 ms	104.18.185.8
Singapore, Singapore	Connected	1.0 ms	104.18.114.8
Tor, Onion	Connected	255.0 ms	www.tibia.com
Tor, Onion	Connected	238.0 ms	www.tibia.com
Tor, Onion	Connected	104.0 ms	www.tibia.com
Turkey, Istanbul	Connected	3.0 ms	104.18.114.8
Turkey, Istanbul	Connected	5.0 ms	104.18.114.8
Taiwan, Taipei	Connected	2.0 ms	104.18.114.8
Ukraine, Khmelnytskyi	Connected	24.0 ms	104.18.185.8
United States, Dallas	Connected	41.0 ms	104.18.114.8
United States, Dallas	Connected	16.0 ms	104.18.114.8
United States, Los Angeles	Connected	1.0 ms	104.18.114.8
United States, Houston	Connected	38.0 ms	104.18.114.8
United States, Miami	Connected	1.0 ms	104.18.114.8
South Africa, Johannesburg	Connected	3.0 ms	104.18.114.8
South Africa, Johannesburg	Connected	3.0 ms	104.18.114.8