COLITU LAB21 of 21 probes online

Network

AS42474 · SmartApe OU

🇮🇱 Israel · Tel AvivDatacenter2,462 tests in 30 days
JSONAPI

Network fingerprint

What this network does to VPN traffic, read from comparing kinds of tests. “Observed” means the measurements are consistent with the behaviour — not proof of intent.

Network classification

Hysteria2Available
VLESS RealityDegraded
VLESS XHTTPDegraded
TrojanDegraded
ShadowsocksDegraded
Server ports (plain TCP)100%

Observed behaviour

Server addresses unreachable (IP or port blocking)Share of plain TCP connections to the servers' ports that failed. Measured: 0.0% failed over 1,072 tests.Not observed
TCP transports fail although the port answersTunnel failure rate of TCP transports minus the failure rate of plain TCP connects to the same ports. A gap points at inspection of the traffic, not at blocked addresses. Measured: a gap of 3.1 points over 1,072 tests.Inconclusive
QUIC/UDP transports fail more often than TCP onesFailure rate of Hysteria2 (QUIC over UDP) minus that of the TCP transports to the same servers. Measured: a gap of 0.0 points over 248 tests.Not observed
Plain DNS over UDP to public resolvers disruptedFailure rate of DNS queries over UDP minus the same queries over TCP to the same public resolvers. Measured: a gap of 0.0 points over 20 tests.Not observed
HTTPS to neutral websites fails without a VPNFailure rate of direct HTTPS requests to well-known neutral sites. Shows whether the network itself works when tunnels fail. Measured: 0.0% failed over 30 tests.Not observed

Basis

Samples2,462
Window30 days
Last updated4 h ago

How each line is computed: methodology.

Transports

Tunnel tests from this network over the last 30 days.

TransportSuccessMedian connectTestsStatus
Hysteria2100%312 ms248Available
VLESS Reality96.3%468 ms268Degraded
VLESS XHTTP96.6%478 ms268Degraded
Trojan97.8%500 ms268Degraded
Shadowsocks97.0%358 ms268Degraded

Success over time

JSONAPI
0%25%50%75%100%17 Sept24 Sept1 Oct8 Oct
Data table
Time (UTC)Hysteria2VLESS RealityVLESS XHTTPTrojanShadowsocks
10 Oct, 06:00–12:00 UTC100% (248)96.3% (268)96.6% (268)97.8% (268)97.0% (268)

Detected changes

No changes detected on this network.

Vantage points on this network

Tel Aviv (datacenter)
since 10 Oct 2026, 07:56 UTC
2,482
measurements
Online