A TCP check from Lithuania connects to your host on the specified port from our Vilnius probe and measures the time to complete the handshake. From Vilnius, a handshake to Riga completes in around 8 ms, to Warsaw in around 20 ms, to Frankfurt in around 50–60 ms. These are the base connection latency values for Lithuanian-sourced traffic before any application-layer processing.

Lithuanian ISPs and data center operators do not apply port-level filtering on business traffic. TCP failures from Lithuania most commonly reflect server-side configuration: firewall rules blocking the Vilnius probe's source IP range, geo-blocking that covers Baltic EU states, or security groups with overly restrictive allow lists. AS61272 (IST) is a legitimate Lithuanian infrastructure operator and its IP space should not appear on standard abuse blocklists.

If a port is reachable from Germany or the Netherlands but fails from Lithuania specifically, the most likely causes are: a geo-block covering the Baltic states or Eastern Europe, asymmetric routing preventing the return TCP packet from reaching the Vilnius probe, or a transit link between AS61272 and the destination's network being down. Running MTR from Lithuania alongside the TCP check gives you the per-hop detail to identify where the failure occurs.

Vilnius is Lithuania's capital and the country's main internet hub. LITIX (Lithuanian Internet Exchange) provides neutral peering infrastructure in the city, connecting Lithuanian ISPs, content networks, and transit providers. Equinix operates a Vilnius facility that adds commercial colocation and peering capacity alongside LITIX. Together these give Vilnius a reasonably well-connected peering environment for a Baltic capital, with direct paths to both Latvia and Poland without routing through Western European hubs.

Our probe node runs on AS61272, operated by Informacines sistemos ir technologijos (IST), a Lithuanian IT and connectivity provider. Both the ISP and the data center for this node are operated by the same organization, making this a vertically integrated setup. The node is located in the Pilaite area of Vilnius. AS61272 peers at LITIX and has upstream transit that covers Baltic and Central European destinations.

Vilnius has low-latency paths to the rest of the Baltic states. Riga is around 8 ms away, Tallinn around 18 ms. Warsaw is around 20 ms, making Lithuania the closest Baltic state to Poland geographically and in network terms. Frankfurt is typically 50–60 ms from Vilnius over well-peered paths. The Poland connection is notable because it provides an alternative routing axis for Lithuanian traffic compared to always going north through Latvia and Estonia to reach Western Europe.

The Lithuanian hosting market has grown alongside the country's technology sector. Several carrier-neutral data centers operate in Vilnius alongside the Equinix presence, and demand for colocation has increased as Lithuanian IT companies scale. Telia (AS1299), Tele2 (AS1257), and Bite (AS13194) are the primary transit carriers for international Lithuanian traffic. Domestic traffic is largely exchanged at LITIX without needing to leave the country.

Lithuania is an EU member with EU-aligned data protection rules, which makes it a valid hosting jurisdiction for GDPR-compliant applications. Its position at the southern end of the Baltic corridor — bordering Poland, Latvia, and Belarus — gives it connectivity characteristics that differ from the more northerly Estonian and Finnish nodes. For operators targeting users in Eastern Poland, Lithuania, or western Belarus, a Vilnius node provides more representative measurements than testing from Riga or Helsinki.