TCP checks from Chisinau (AS43289) attempt a SYN-ACK handshake to your host and measure connection time. Trabia SRL does not filter outbound TCP on commercial connections. A failed TCP check from our Moldovan node means the block or failure is on the target side or in transit — either the port is closed, a firewall is blocking Moldovan source IPs, or there is a routing black-hole affecting AS43289 prefixes.

TCP handshake times from Chisinau: to Bucharest approximately 18–22 ms, to Kyiv approximately 22–28 ms, to Vienna approximately 38–44 ms, to Frankfurt approximately 58–70 ms. These define the minimum achievable connection setup time for services targeting Moldovan users. For applications with strict latency requirements, a Bucharest-hosted origin gives Moldovan users a connection setup cost of roughly 18–22 ms versus 58–70 ms for a Frankfurt origin.

A TCP check from Moldova succeeding while ping fails to the same host is the expected pattern for hosts that rate-limit or drop ICMP but pass TCP normally — this is not a fault. A TCP check from Moldova failing while German and Romanian nodes succeed points to either ASN-specific filtering (check if AS43289 prefixes are on any blocklist), a geo-block covering Moldovan IP ranges, or asymmetric routing on the return path. Running MTR from our Chisinau node will identify where on the path the TCP session breaks down.

Moldova is a landlocked country situated between Romania to the west and Ukraine to the north and east. Its internet infrastructure is concentrated in Chisinau, where MDIX (Moldova Internet Exchange) provides the primary domestic peering point for Moldovan ISPs. Our probe node runs on AS43289 (Trabia SRL) in Chisinau. Trabia is one of Moldova's largest ISPs and data center operators, making it a representative vantage point for testing connectivity from Moldovan commercial hosting infrastructure.

International transit from Moldova exits almost entirely via Romania, with secondary paths through Ukraine. The Chisinau-to-Bucharest path runs approximately 18–22 ms, and Chisinau-to-Kyiv runs approximately 22–28 ms. From Bucharest, onward paths reach Frankfurt in approximately 40–48 ms and Vienna in approximately 30–36 ms, making total end-to-end latency from Chisinau to Frankfurt typically around 58–70 ms. Moldova's dependence on Romanian transit means its international connectivity is strongly coupled to Romanian carrier routing decisions.

The Moldovan ISP market is relatively consolidated. Moldtelecom (AS8926) is the incumbent fixed-line operator. Orange Moldova and Moldcell serve the mobile and broadband markets. Trabia SRL (AS43289) is a major commercial ISP and the operator of one of Chisinau's largest data centers, making it the primary hosting-grade network in the country. Transit upstream for Moldovan networks is predominantly sourced through Romanian carriers — Telekom Romania (AS8953), RCS&RDS (AS8708), and RETN (AS9002). Cogent (AS174) and Telia (AS1299) are also present through cross-border links.

MDIX in Chisinau connects the major Moldovan ISPs for domestic traffic exchange and reduces the volume of local traffic that must transit through Romania. However, MDIX membership and traffic volumes remain modest compared to exchanges in larger regional markets. A significant portion of inter-ISP Moldovan traffic still routes externally, particularly for ISPs that are not MDIX participants. This means intra-Moldova latency can vary substantially depending on which ISPs are involved — two Moldovan endpoints may experience 5 ms on a direct path or 60 ms on a path that exits to Romania and returns.

Moldova has seen growth in its hosting market in recent years, partially driven by lower operating costs compared to Romania and EU markets. Trabia SRL's data center in Chisinau provides carrier-neutral colocation with diverse transit options. For services targeting users in Moldova, Ukraine, or Eastern Romania, a Chisinau-hosted origin avoids the additional transit hop through Bucharest. Our probe on AS43289 reflects the routing conditions of Trabia's commercial network, which is the standard baseline for Moldovan hosting-grade connectivity.