Probe Time	Probe Node	Verdict	Latency (RTT)	Exit IP
Tue, 20 Oct 2026 13:25:20 UTC	🇺🇸 US Main	🟢 HTTP 204 OK	212 ms	51.81.203.63
Tue, 20 Oct 2026 12:25:20 UTC	🇺🇸 US Main	🟢 HTTP 204 OK	227 ms	51.81.203.63
Tue, 20 Oct 2026 11:25:21 UTC	🇺🇸 US Main	🟢 HTTP 204 OK	210 ms	51.81.203.63
Tue, 20 Oct 2026 10:25:20 UTC	🇺🇸 US Main	🟢 HTTP 204 OK	252 ms	51.81.203.63
Tue, 20 Oct 2026 09:25:20 UTC	🇺🇸 US Main	🟢 HTTP 204 OK	202 ms	51.81.203.63
Tue, 20 Oct 2026 08:25:20 UTC	🇺🇸 US Main	🟢 HTTP 204 OK	296 ms	51.81.203.63
Tue, 20 Oct 2026 07:25:20 UTC	🇺🇸 US Main	🟢 HTTP 204 OK	434 ms	51.81.203.63
Tue, 20 Oct 2026 06:25:20 UTC	🇺🇸 US Main	🟢 HTTP 204 OK	292 ms	51.81.203.63
Tue, 20 Oct 2026 05:25:20 UTC	🇺🇸 US Main	🟢 HTTP 204 OK	202 ms	51.81.203.63
Tue, 20 Oct 2026 04:25:20 UTC	🇺🇸 US Main	🟢 HTTP 204 OK	187 ms	51.81.203.63
Tue, 20 Oct 2026 03:25:20 UTC	🇺🇸 US Main	🟢 HTTP 204 OK	797 ms	51.81.203.63
Tue, 20 Oct 2026 02:25:20 UTC	🇺🇸 US Main	🟢 HTTP 204 OK	973 ms	51.81.203.63
Tue, 20 Oct 2026 01:25:20 UTC	🇺🇸 US Main	🟢 HTTP 204 OK	479 ms	51.81.203.63
Tue, 20 Oct 2026 00:25:20 UTC	🇺🇸 US Main	🟢 HTTP 204 OK	548 ms	51.81.203.63
Mon, 19 Oct 2026 23:25:20 UTC	🇺🇸 US Main	🟢 HTTP 204 OK	708 ms	51.81.203.63

⚙️ 协议核心技术参数

Verified protocol configuration attributes required for manual client profiles.

主机 / 域名 51.81.203.63

端口号 443

安全传输协议 REALITY

底层传输方式 TCP

SNI 伪装域名 www.icloud.com

公钥 (pbk) nqwCf6oW49tEtmQ0EzxigZ0uu1pg0E30CS54G40Iti0

短标识 (sid) 4477382ff6d3d41c

流控算法 (Flow) xtls-rprx-vision

路径 (Path) /

UUID cb2dbb6a-a1ea-4023-9ace-6466cee57241

TLS 指纹 (Fingerprint) 13777768

🛡️

Xray REALITY over RAW / TCP

Cryptographic resistance profile and Deep Packet Inspection (DPI) evasion analysis

SNI: High-Profile Global SNI (Probing Risk) Port 443 (Standard HTTPS) uTLS: 13777768 (Active)

This node utilizes RAW / TCP transport with Xray REALITY. It applies TLS-in-TLS masking to eliminate identifiable proxy signatures, making the handshake look like a legitimate browser connection.

Network Port Analysis: Port 443 is the universal standard for secure HTTPS traffic. Firewalls and ISPs cannot block it without disrupting regular web access.

SNI Masking Analysis (www.icloud.com): High-profile global domains (www.icloud.com) are monitored by censorship systems; Reality endpoints with these SNIs face aggressive active probing.

uTLS Handshake Security Analysis (13777768): Emulating 13777768 TLS parameters to protect against passive fingerprinting.

Flow Technology: Flow "xtls-rprx-vision" (XTLS Vision Seed) dynamically obfuscates packet padding, preventing DPI systems from measuring TLS ClientHello length patterns.

Client Handshake Masking (uTLS): Emulating 13777768 TLS parameters to protect against passive fingerprinting.

REALITY Cryptography: Public key (pbk) pinned on server • Short ID (sid: 4477382ff6d3d41c) validated for session authorization

❓ Frequently Asked Questions for Node #13777768

How does the REALITY security profile protect my connection? ▼

This node utilizes RAW / TCP transport with Xray REALITY. It applies TLS-in-TLS masking to eliminate identifiable proxy signatures, making the handshake look like a legitimate browser connection.

What client apps are recommended for this VLESS key? ▼

We recommend modern clients supporting VLESS Reality and Vision: Happ, Incy, v2RayTun, FlClashX, Koala Clash, Karing, and v2rayNG.

What should I do if this server stops responding? ▼

Free public keys are updated and re-verified automatically every 15-30 minutes. If this key goes offline, use our 1-click subscription link to always receive only fresh, currently responsive servers.

🌐 7-Service Geocheck & Regional Consensus

Authentic multi-provider exit node audit across 16 GeoIP databases, RIPE/ASN, proxycheck.io v3, CDN PoP, AI APIs, and Stash probes.

GeoCheck v1.4 ⏱ 6.52s

1. Exit IP & Autonomous System (Identity) 🇺🇸 US

Public Exit IPv4: 51.81.203.63

Network (ASN / Org): AS16276 · OVH SAS

BGP Prefix / Subnet: —

Node Location: Hillsboro, Oregon — 🇺🇸 US

2. IP Address Reputation (proxycheck.io v3) Hosting

Address Class: 🖥️ Hosting / Datacenter

Risk Score:

20 / 100 (95% conf)

Detection Flags:

hosting

Operator / Provider: OVH SAS

3. Geolocation Consensus (IPv4)

Providers tallied: 24

🇺🇸 US United States

100% (24/24)

🔓 4. Service Availability & Anti-Bot Checks (Stash Checks)

Service	Status	Region	Technical Detail	RTT
ChatGPT (web)	● available	—	—	629 ms
ChatGPT (app)	● available	—	—	710 ms
YouTube Premium	● available	—	—	532 ms
Netflix	○ error	—	request failed	6005 ms
Claude	○ error	🇺🇸 US	Cloudflare challenged the request, so availability was never tested	185 ms
TikTok	● available	—	—	828 ms
Gemini	● available	—	—	742 ms
NotebookLM	● available	—	sign-in required	1537 ms

🤖 5. AI Model API Endpoints (Direct Probe)

AI Endpoint	Vendor	State	HTTP	Detail	RTT
OpenAI	OpenAI	● reachable	401	answered, credentials not supplied	629 ms
Anthropic	Anthropic	● reachable	401	answered, credentials not supplied	618 ms
Google Gemini	Google	● reachable	403	answered, credentials not supplied	626 ms
DeepSeek	DeepSeek	● reachable	401	answered, credentials not supplied	803 ms
Qwen (Singapore)	Alibaba	● reachable	401	answered, credentials not supplied	2520 ms
Qwen (Beijing)	Alibaba	● error	—	request failed	—
Kimi / Moonshot	Moonshot	● error	—	request failed	—
Zhipu GLM	Zhipu	● reachable	401	answered, credentials not supplied	1012 ms