diff --git a/app/(main)/network-map/page.tsx b/app/(main)/network-map/page.tsx
index 2baafef..c582b2f 100644
--- a/app/(main)/network-map/page.tsx
+++ b/app/(main)/network-map/page.tsx
@@ -67,6 +67,7 @@ import {
   CableIcon, CopyIcon, ActivityIcon, ExternalLinkIcon,
 } from "lucide-react"
 import { cn } from "@/lib/utils"
+import { formatServicePathLabel, formatServicePathTitle } from "@/lib/format-service-path-label"
 import Link from "next/link"
 import { Flag } from "@/components/flag"
 
@@ -820,9 +821,15 @@ function ServicePathList({
       {paths.map((p) => {
         const rowKey = servicePathKey(p)
         const via = servers.find((s) => s.id === p.viaId)
-        const viaLabel = via?.site || p.viaName
+        const en = servers.find((s) => s.id === p.enId)
         const svc = services.find((s) => s.id === p.serviceId)
-        const mid = viaMode === "via" ? viaLabel : (svc?.label ?? p.serviceId)
+        const label = formatServicePathLabel(p, viaMode, {
+          viaName: via?.name,
+          viaSite: via?.site,
+          enName: en?.name,
+          serviceLabel: svc?.label,
+        })
+        const title = formatServicePathTitle(label, svc?.label ?? p.serviceId)
         const active = Boolean(
           highlight
           && highlight.viaId === p.viaId
@@ -833,13 +840,14 @@ function ServicePathList({
           <button
             key={rowKey}
             type="button"
+            title={title}
             onClick={() => onToggle(p)}
             className={cn(
               "flex items-center justify-between gap-2 rounded-md px-2 py-1.5 text-left text-xs transition-colors",
               active ? "bg-cyan-500/15 ring-1 ring-cyan-500/40" : "hover:bg-muted/50",
             )}
           >
-            <span className="font-mono truncate min-w-0">{p.clientName} · {mid}</span>
+            <span className="font-mono truncate min-w-0">{label}</span>
             <span className="font-mono text-emerald-400 tabular-nums shrink-0">
               {formatNetflowRate({ bytes: p.bytes, bps: p.bps, bpsFwd: p.bps, bpsRev: 0 })}
             </span>
diff --git a/lib/format-service-path-label.test.ts b/lib/format-service-path-label.test.ts
new file mode 100644
index 0000000..fccce6b
--- /dev/null
+++ b/lib/format-service-path-label.test.ts
@@ -0,0 +1,62 @@
+import assert from "node:assert/strict"
+import {
+  formatServicePathLabel,
+  formatServicePathTitle,
+  isUnboundServicePath,
+} from "./format-service-path-label.ts"
+
+const bound = {
+  clientId: "u1",
+  clientName: "D",
+  viaId: "7",
+  viaName: "nsk-gw01",
+  enId: "9",
+  enName: "arn-gw01",
+  serviceId: "svc:cdn",
+}
+
+const jhEn = {
+  clientId: "—",
+  clientName: "—",
+  viaId: "7",
+  viaName: "msk-gw01",
+  enId: "9",
+  enName: "arn-gw01",
+  serviceId: "svc:cdn",
+}
+
+const enOnly = {
+  clientId: "—",
+  clientName: "—",
+  viaId: "9",
+  viaName: "arn-gw01",
+  enId: "9",
+  enName: "arn-gw01",
+  serviceId: "svc:cdn",
+}
+
+assert.equal(isUnboundServicePath(jhEn), true)
+assert.equal(isUnboundServicePath(bound), false)
+
+assert.equal(
+  formatServicePathLabel(jhEn, "via", { viaName: "msk-gw01.rtnt.top", enName: "arn-gw01.rtnt.top" }),
+  "msk-gw01.rtnt.top → arn-gw01.rtnt.top",
+)
+assert.equal(formatServicePathLabel(enOnly, "via"), "arn-gw01 · без привязки")
+assert.equal(formatServicePathLabel(enOnly, "service"), "arn-gw01 · без привязки")
+
+assert.equal(
+  formatServicePathLabel(bound, "via", { viaSite: "NSK" }),
+  "D · NSK",
+)
+assert.equal(
+  formatServicePathLabel(bound, "service", { serviceLabel: "CDN" }),
+  "D · CDN",
+)
+
+assert.equal(
+  formatServicePathTitle("msk-gw01 → arn-gw01", "CDN"),
+  "msk-gw01 → arn-gw01 · CDN",
+)
+
+console.log("format-service-path-label.test.ts: ok")
diff --git a/lib/format-service-path-label.ts b/lib/format-service-path-label.ts
new file mode 100644
index 0000000..06818df
--- /dev/null
+++ b/lib/format-service-path-label.ts
@@ -0,0 +1,45 @@
+export const UNBOUND_PATH_CLIENT = "—"
+
+export interface ServicePathLabelInput {
+  clientId: string
+  clientName: string
+  viaId: string
+  viaName: string
+  enId: string
+  enName: string
+  serviceId: string
+}
+
+export interface ServicePathLabelNames {
+  viaName?: string
+  viaSite?: string
+  enName?: string
+  serviceLabel?: string
+}
+
+export function isUnboundServicePath(p: Pick<ServicePathLabelInput, "clientId" | "clientName">): boolean {
+  return p.clientId === UNBOUND_PATH_CLIENT || p.clientName === UNBOUND_PATH_CLIENT
+}
+
+export function formatServicePathLabel(
+  p: ServicePathLabelInput,
+  viaMode: "via" | "service",
+  names: ServicePathLabelNames = {},
+): string {
+  const viaName = names.viaName || p.viaName
+  const enName = names.enName || p.enName
+  if (isUnboundServicePath(p)) {
+    if (p.viaId !== p.enId) return `${viaName} → ${enName}`
+    return `${enName} · без привязки`
+  }
+  const viaLabel = names.viaSite || p.viaName
+  const mid = viaMode === "via" ? viaLabel : (names.serviceLabel || p.serviceId)
+  return `${p.clientName} · ${mid}`
+}
+
+export function formatServicePathTitle(label: string, serviceLabel: string): string {
+  const svc = serviceLabel.trim()
+  if (!svc) return label
+  if (label.includes(svc)) return label
+  return `${label} · ${svc}`
+}