diff --git a/web/src/App.vue b/web/src/App.vue
index 9166780..2afaef6 100644
--- a/web/src/App.vue
+++ b/web/src/App.vue
@@ -58,6 +58,7 @@ const navLinks = [
   { to: '/bundles',   label: 'Bundles' },
   { to: '/sources',   label: 'Sources' },
   { to: '/context',   label: 'Context' },
+  { to: '/blocklist', label: 'Blocklist' },
 ]
 
 const isDark          = ref(document.documentElement.classList.contains('dark'))
diff --git a/web/src/router/index.ts b/web/src/router/index.ts
index ee1903d..b2c7f97 100644
--- a/web/src/router/index.ts
+++ b/web/src/router/index.ts
@@ -7,6 +7,7 @@ import IncidentsView from '@/views/IncidentsView.vue'
 import BundlesView from '@/views/BundlesView.vue'
 import SettingsView from '@/views/SettingsView.vue'
 import ContextView from '@/views/ContextView.vue'
+import BlocklistView from '@/views/BlocklistView.vue'
 
 export default createRouter({
   history: createWebHistory(import.meta.env.BASE_URL),
@@ -19,6 +20,7 @@ export default createRouter({
     { path: '/bundles', component: BundlesView },
     { path: '/sources', component: SourcesView },
     { path: '/context', component: ContextView },
+    { path: '/blocklist', component: BlocklistView },
     { path: '/settings', component: SettingsView },
   ],
 })
diff --git a/web/src/views/BlocklistView.vue b/web/src/views/BlocklistView.vue
new file mode 100644
index 0000000..ad23a36
--- /dev/null
+++ b/web/src/views/BlocklistView.vue
@@ -0,0 +1,333 @@
+<template>
+  <div class="p-6 max-w-5xl mx-auto">
+
+    <!-- Header -->
+    <div class="mb-6 flex items-start justify-between gap-4">
+      <div>
+        <h1 class="text-text-primary text-xl font-semibold mb-1">Blocklist</h1>
+        <p class="text-text-dim text-sm">
+          Review destinations flagged from router logs and push approved entries to Pi-hole.
+        </p>
+      </div>
+      <div class="flex items-center gap-3 shrink-0">
+        <button
+          @click="testConnection"
+          :class="[
+            'text-xs px-2 py-1 rounded border transition-colors',
+            connectionStatus === null ? 'border-surface-border text-text-dim hover:text-text-primary' :
+            connectionStatus ? 'border-green-600 text-green-400' : 'border-sev-error text-sev-error'
+          ]"
+          :title="connectionDetail || 'Click to test Pi-hole connection'"
+        >
+          Pi-hole
+          <span v-if="connectionStatus === null">●</span>
+          <span v-else-if="connectionStatus">✓</span>
+          <span v-else>✗</span>
+        </button>
+        <button
+          @click="scan"
+          :disabled="scanning"
+          class="px-4 py-2 bg-accent text-surface text-sm rounded font-medium hover:opacity-90 transition-opacity disabled:opacity-40"
+        >
+          {{ scanning ? 'Scanning…' : 'Scan now' }}
+        </button>
+      </div>
+    </div>
+
+    <!-- Status filter tabs -->
+    <div role="tablist" aria-label="Filter by status" class="flex gap-1 mb-6 border-b border-surface-border">
+      <button
+        v-for="(tab, idx) in tabs"
+        :key="tab.value"
+        role="tab"
+        :aria-selected="activeTab === tab.value"
+        :tabindex="activeTab === tab.value ? 0 : -1"
+        @click="activeTab = tab.value"
+        @keydown="handleTabKey($event, idx)"
+        :ref="(el) => collectTabRef(el, idx)"
+        :class="[
+          'px-4 py-2 text-sm transition-colors border-b-2 -mb-px',
+          activeTab === tab.value
+            ? 'border-accent text-accent'
+            : 'border-transparent text-text-dim hover:text-text-primary'
+        ]"
+      >
+        {{ tab.label }}
+        <span v-if="tab.count !== null" class="ml-1 text-xs opacity-70">({{ tab.count }})</span>
+      </button>
+    </div>
+
+    <!-- Loading / empty states -->
+    <div v-if="loading" class="text-text-dim py-12 text-center text-sm">Loading…</div>
+
+    <div v-else-if="filteredCandidates.length === 0" class="text-text-dim py-12 text-center text-sm">
+      <p v-if="activeTab === 'pending'">No pending candidates. Run a scan to find new destinations.</p>
+      <p v-else>No candidates with status "{{ activeTab }}".</p>
+    </div>
+
+    <!-- Candidates grouped by device -->
+    <div v-else class="space-y-6">
+      <div
+        v-for="(group, deviceIp) in groupedCandidates"
+        :key="String(deviceIp)"
+        class="rounded border border-surface-border overflow-hidden"
+      >
+        <div class="bg-surface-raised border-b border-surface-border px-4 py-2.5 text-xs text-text-dim font-medium">
+          {{ group.name }} <span class="text-text-dim font-normal ml-1">({{ deviceIp }})</span>
+        </div>
+        <div class="divide-y divide-surface-border">
+          <div
+            v-for="c in group.candidates"
+            :key="c.id"
+            class="px-4 py-3"
+          >
+            <div class="flex items-center gap-3 flex-wrap">
+              <span class="font-mono text-sm text-text-primary flex-1 min-w-0 truncate">{{ c.domain_or_ip }}</span>
+              <span
+                v-if="c.matched_rule"
+                class="text-xs px-1.5 py-0.5 rounded bg-surface border border-surface-border text-text-dim font-mono shrink-0"
+              >{{ c.matched_rule }}</span>
+              <span class="text-xs text-text-dim shrink-0">{{ c.hit_count }} hit{{ c.hit_count !== 1 ? 's' : '' }}</span>
+              <span class="text-xs text-text-dim shrink-0">{{ shortDate(c.first_seen) }} → {{ shortDate(c.last_seen) }}</span>
+
+              <!-- Pending actions -->
+              <template v-if="c.status === 'pending'">
+                <button
+                  @click="approve(c)"
+                  :aria-label="`Approve ${c.domain_or_ip}`"
+                  class="text-xs px-3 py-1 rounded border border-green-600/50 text-green-400 hover:bg-green-600/10 transition-colors"
+                >Approve</button>
+                <button
+                  @click="reject(c)"
+                  :aria-label="`Reject ${c.domain_or_ip}`"
+                  class="text-xs px-3 py-1 rounded border border-surface-border text-text-dim hover:text-sev-error hover:border-sev-error transition-colors"
+                >Reject</button>
+              </template>
+
+              <!-- Approved actions -->
+              <template v-else-if="c.status === 'approved'">
+                <span class="text-xs text-green-400">Approved</span>
+                <button
+                  @click="push(c)"
+                  :aria-label="`Push ${c.domain_or_ip} to Pi-hole`"
+                  class="text-xs px-3 py-1 rounded bg-accent text-surface hover:opacity-90 transition-opacity"
+                >Push to Pi-hole</button>
+              </template>
+
+              <!-- Pushed actions -->
+              <template v-else-if="c.status === 'pushed'">
+                <span class="text-xs text-accent">Blocked</span>
+                <button
+                  @click="unblock(c)"
+                  :aria-label="`Unblock ${c.domain_or_ip}`"
+                  class="text-xs px-3 py-1 rounded border border-surface-border text-text-dim hover:text-text-primary transition-colors"
+                >Unblock</button>
+              </template>
+
+              <!-- Other statuses -->
+              <template v-else>
+                <span class="text-xs text-text-dim capitalize">{{ c.status }}</span>
+              </template>
+            </div>
+
+            <!-- Log evidence -->
+            <div v-if="c.log_evidence.length" class="mt-1">
+              <button
+                @click="toggleEvidence(c.id)"
+                :aria-expanded="expandedEvidence.has(c.id)"
+                class="text-xs text-text-dim hover:text-text-primary transition-colors"
+              >
+                {{ expandedEvidence.has(c.id) ? '▾' : '▸' }} log evidence ({{ c.log_evidence.length }})
+              </button>
+              <div v-if="expandedEvidence.has(c.id)" class="mt-1 text-xs font-mono text-text-dim bg-surface rounded p-2 space-y-0.5">
+                <p v-for="eid in c.log_evidence.slice(0, 3)" :key="eid" class="truncate">{{ eid }}</p>
+              </div>
+            </div>
+
+            <!-- Inline error -->
+            <p v-if="errors[c.id]" class="mt-1 text-xs text-sev-error">{{ errors[c.id] }}</p>
+          </div>
+        </div>
+      </div>
+    </div>
+
+    <!-- Global scan error -->
+    <div v-if="scanError" role="alert" class="mt-4 text-sm text-sev-error">{{ scanError }}</div>
+  </div>
+</template>
+
+<script setup lang="ts">
+import { ref, computed, onMounted } from 'vue'
+
+const BASE = import.meta.env.BASE_URL.replace(/\/$/, '')
+
+interface Candidate {
+  id: string
+  domain_or_ip: string
+  source_device_ip: string | null
+  source_device_name: string | null
+  first_seen: string
+  last_seen: string
+  hit_count: number
+  status: 'pending' | 'approved' | 'rejected' | 'pushed' | 'unblocked'
+  pushed_at: string | null
+  log_evidence: string[]
+  matched_rule: string | null
+  llm_score: number | null
+  llm_reason: string | null
+}
+
+const candidates       = ref<Candidate[]>([])
+const loading          = ref(true)
+const scanning         = ref(false)
+const scanError        = ref<string | null>(null)
+const activeTab        = ref('pending')
+const expandedEvidence = ref(new Set<string>())
+const errors           = ref<Record<string, string>>({})
+const connectionStatus = ref<boolean | null>(null)
+const connectionDetail = ref('')
+const tabBtnRefs       = ref<HTMLButtonElement[]>([])
+
+const tabDefs = [
+  { value: 'pending',   label: 'Pending'   },
+  { value: 'approved',  label: 'Approved'  },
+  { value: 'pushed',    label: 'Pushed'    },
+  { value: 'rejected',  label: 'Rejected'  },
+  { value: 'unblocked', label: 'Unblocked' },
+  { value: 'all',       label: 'All'       },
+]
+
+const tabs = computed(() =>
+  tabDefs.map(t => ({
+    ...t,
+    count: ['pending', 'approved', 'pushed'].includes(t.value)
+      ? candidates.value.filter(c => c.status === t.value).length
+      : null,
+  }))
+)
+
+const filteredCandidates = computed(() =>
+  activeTab.value === 'all'
+    ? candidates.value
+    : candidates.value.filter(c => c.status === activeTab.value)
+)
+
+const groupedCandidates = computed(() => {
+  const groups: Record<string, { name: string; candidates: Candidate[] }> = {}
+  for (const c of filteredCandidates.value) {
+    const key = c.source_device_ip ?? 'unknown'
+    if (!groups[key]) groups[key] = { name: c.source_device_name ?? key, candidates: [] }
+    groups[key]!.candidates.push(c)
+  }
+  return groups
+})
+
+async function load() {
+  loading.value = true
+  try {
+    const res = await fetch(`${BASE}/api/blocklist/candidates`)
+    if (res.ok) candidates.value = (await res.json()).candidates
+  } finally {
+    loading.value = false
+  }
+}
+
+async function scan() {
+  scanning.value = true
+  scanError.value = null
+  try {
+    const res = await fetch(`${BASE}/api/blocklist/scan`, { method: 'POST' })
+    if (!res.ok) throw new Error((await res.json()).detail ?? res.statusText)
+    setTimeout(load, 1500)
+  } catch (e) {
+    scanError.value = e instanceof Error ? e.message : 'Scan failed'
+  } finally {
+    scanning.value = false
+  }
+}
+
+async function approve(c: Candidate) { await updateStatus(c, 'approved') }
+async function reject(c: Candidate)  { await updateStatus(c, 'rejected') }
+
+async function updateStatus(c: Candidate, status: string) {
+  errors.value[c.id] = ''
+  try {
+    const res = await fetch(`${BASE}/api/blocklist/candidates/${c.id}`, {
+      method: 'PATCH',
+      headers: { 'Content-Type': 'application/json' },
+      body: JSON.stringify({ status }),
+    })
+    if (!res.ok) throw new Error((await res.json()).detail ?? res.statusText)
+    const updated: Candidate = await res.json()
+    candidates.value = candidates.value.map(x => x.id === c.id ? updated : x)
+  } catch (e) {
+    errors.value[c.id] = e instanceof Error ? e.message : 'Update failed'
+  }
+}
+
+async function push(c: Candidate) {
+  errors.value[c.id] = ''
+  try {
+    const res = await fetch(`${BASE}/api/blocklist/push/${c.id}`, { method: 'POST' })
+    if (!res.ok) throw new Error((await res.json()).detail ?? res.statusText)
+    await load()
+  } catch (e) {
+    errors.value[c.id] = e instanceof Error ? e.message : 'Push failed'
+  }
+}
+
+async function unblock(c: Candidate) {
+  errors.value[c.id] = ''
+  try {
+    const res = await fetch(`${BASE}/api/blocklist/push/${c.id}`, { method: 'DELETE' })
+    if (!res.ok) throw new Error((await res.json()).detail ?? res.statusText)
+    await load()
+  } catch (e) {
+    errors.value[c.id] = e instanceof Error ? e.message : 'Unblock failed'
+  }
+}
+
+async function testConnection() {
+  connectionStatus.value = null
+  try {
+    const res = await fetch(`${BASE}/api/blocklist/test`, { method: 'POST' })
+    const data = await res.json()
+    connectionStatus.value = data.ok === true
+    connectionDetail.value = data.ok
+      ? `Pi-hole ${data.version} — ${data.domain_count} domains blocked`
+      : `Error: ${data.error ?? 'connection failed'}`
+  } catch {
+    connectionStatus.value = false
+    connectionDetail.value = 'Network error'
+  }
+}
+
+function toggleEvidence(id: string) {
+  const s = new Set(expandedEvidence.value)
+  s.has(id) ? s.delete(id) : s.add(id)
+  expandedEvidence.value = s
+}
+
+function shortDate(iso: string | null): string {
+  if (!iso) return '—'
+  try { return new Date(iso).toLocaleDateString(undefined, { month: 'short', day: 'numeric' }) }
+  catch { return iso }
+}
+
+function collectTabRef(el: unknown, idx: number) {
+  if (el instanceof HTMLButtonElement) tabBtnRefs.value[idx] = el
+}
+
+function handleTabKey(e: KeyboardEvent, idx: number) {
+  let next = idx
+  if (e.key === 'ArrowRight') next = idx + 1
+  else if (e.key === 'ArrowLeft')  next = idx - 1
+  else return
+  e.preventDefault()
+  const clamped = Math.max(0, Math.min(tabDefs.length - 1, next))
+  activeTab.value = tabDefs[clamped]!.value
+  tabBtnRefs.value[clamped]?.focus()
+}
+
+onMounted(load)
+</script>
diff --git a/web/src/views/SettingsView.vue b/web/src/views/SettingsView.vue
index 99a8cd2..463152a 100644
--- a/web/src/views/SettingsView.vue
+++ b/web/src/views/SettingsView.vue
@@ -175,6 +175,84 @@
         </div>
       </div>
 
+      <!-- Pi-hole integration -->
+      <div>
+        <h2 class="text-text-primary text-sm font-semibold mb-1">Pi-hole Blocklist</h2>
+        <p class="text-text-dim text-xs mb-3">
+          Push flagged IoT destinations to your Pi-hole instance.
+          Find your API key (v5) or app password (v6) in Pi-hole's admin settings.
+        </p>
+        <div class="space-y-3">
+          <div class="flex gap-3">
+            <div class="flex-1">
+              <label class="block text-xs text-text-dim mb-1">Pi-hole URL</label>
+              <input
+                v-model="prefs.pihole_url"
+                type="text"
+                placeholder="http://pi.hole"
+                class="w-full bg-surface border border-surface-border rounded px-3 py-2 text-sm text-text-primary placeholder-text-dim focus:outline-none focus:border-accent transition-colors"
+              />
+            </div>
+            <div>
+              <label class="block text-xs text-text-dim mb-1">Version</label>
+              <select
+                v-model="prefs.pihole_version"
+                class="bg-surface border border-surface-border rounded px-3 py-2 text-sm text-text-primary focus:outline-none focus:border-accent"
+              >
+                <option value="v6">v6</option>
+                <option value="v5">v5</option>
+              </select>
+            </div>
+          </div>
+          <div>
+            <label class="block text-xs text-text-dim mb-1">API Key / App Password</label>
+            <div class="relative">
+              <input
+                v-model="prefs.pihole_api_key"
+                :type="showPiholeKey ? 'text' : 'password'"
+                placeholder="Pi-hole app password or API key"
+                class="w-full bg-surface border border-surface-border rounded px-3 py-2 text-sm text-text-primary placeholder-text-dim focus:outline-none focus:border-accent transition-colors"
+              />
+              <button
+                type="button"
+                @click="showPiholeKey = !showPiholeKey"
+                :aria-label="showPiholeKey ? 'Hide key' : 'Show key'"
+                class="absolute right-3 top-1/2 -translate-y-1/2 text-text-dim hover:text-text-primary text-xs"
+              >{{ showPiholeKey ? 'Hide' : 'Show' }}</button>
+            </div>
+          </div>
+          <div>
+            <label class="block text-xs text-text-dim mb-1">Router Source IDs <span class="font-normal text-text-dim">(comma-separated)</span></label>
+            <input
+              v-model="prefs.router_source_ids"
+              type="text"
+              placeholder="router:syslog, router:firewall"
+              class="w-full bg-surface border border-surface-border rounded px-3 py-2 text-sm text-text-primary placeholder-text-dim focus:outline-none focus:border-accent transition-colors"
+            />
+          </div>
+          <div>
+            <label class="block text-xs text-text-dim mb-1">Device Names <span class="font-normal">(JSON: {"ip": "name"})</span></label>
+            <textarea
+              v-model="prefs.device_names"
+              rows="3"
+              placeholder='{"192.168.1.45": "Samsung Projector", "192.168.1.67": "Belkin Switch 1"}'
+              class="w-full bg-surface border border-surface-border rounded px-3 py-2 text-sm text-text-primary placeholder-text-dim font-mono focus:outline-none focus:border-accent transition-colors resize-y"
+            ></textarea>
+          </div>
+          <div class="flex items-center gap-3">
+            <button
+              @click="savePihole"
+              class="px-4 py-2 bg-accent text-surface text-sm rounded font-medium hover:opacity-90 transition-opacity"
+            >Save Pi-hole settings</button>
+            <button
+              @click="testPihole"
+              class="px-3 py-2 text-sm rounded border border-surface-border text-text-muted hover:text-accent hover:border-accent transition-colors"
+            >Test connection</button>
+            <span v-if="piholeStatus" :class="piholeStatus.ok ? 'text-green-400' : 'text-sev-error'" class="text-xs">{{ piholeStatus.msg }}</span>
+          </div>
+        </div>
+      </div>
+
       <p
         v-if="saveStatus"
         role="status"
@@ -207,12 +285,19 @@ interface Prefs {
   llm_model: string
   llm_api_key: string
   severity_overrides: SeverityOverride[]
+  pihole_url: string
+  pihole_version: string
+  pihole_api_key: string
+  router_source_ids: string
+  device_names: string
 }
 
-const prefs      = ref<Prefs>({ entry_point_style: 'topbar', llm_url: '', llm_model: '', llm_api_key: '', severity_overrides: [] })
+const prefs      = ref<Prefs>({ entry_point_style: 'topbar', llm_url: '', llm_model: '', llm_api_key: '', severity_overrides: [], pihole_url: '', pihole_version: 'v6', pihole_api_key: '', router_source_ids: '', device_names: '' })
 const saveStatus = ref<{ ok: boolean; msg: string } | null>(null)
 const showAddOverride = ref(false)
 const showApiKey = ref(false)
+const showPiholeKey  = ref(false)
+const piholeStatus   = ref<{ ok: boolean; msg: string } | null>(null)
 const newRule = ref<SeverityOverride>({ name: '', pattern: '', override_severity: 'WARN', enabled: true })
 const entryPointBtnRefs = ref<HTMLButtonElement[]>([])
 
@@ -304,4 +389,34 @@ async function addOverride() {
   showAddOverride.value = false
   await saveOverrides()
 }
+
+async function savePihole() {
+  saveStatus.value = null
+  try {
+    await patch({
+      pihole_url: prefs.value.pihole_url,
+      pihole_version: prefs.value.pihole_version,
+      pihole_api_key: prefs.value.pihole_api_key,
+      router_source_ids: prefs.value.router_source_ids,
+      device_names: prefs.value.device_names,
+    })
+    saveStatus.value = { ok: true, msg: 'Pi-hole settings saved' }
+    setTimeout(() => { saveStatus.value = null }, 2000)
+  } catch {
+    saveStatus.value = { ok: false, msg: 'Save failed — check server connection' }
+  }
+}
+
+async function testPihole() {
+  piholeStatus.value = null
+  try {
+    const res = await fetch(`${BASE}/api/blocklist/test`, { method: 'POST' })
+    const data = await res.json()
+    piholeStatus.value = data.ok
+      ? { ok: true, msg: `Connected — Pi-hole ${data.version}, ${data.domain_count} domains` }
+      : { ok: false, msg: data.error ?? 'Connection failed' }
+  } catch {
+    piholeStatus.value = { ok: false, msg: 'Network error' }
+  }
+}
 </script>