diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9ee0ffc..aec7db4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,11 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
+## [0.5.0] - 2024-07-25
+
+### Added
+- Number Insight v1 API
+
 ## [0.4.0] - 2024-07-23
 
 ### Added
diff --git a/README.md b/README.md
index 7e38ec9..3f32d03 100644
--- a/README.md
+++ b/README.md
@@ -21,6 +21,7 @@ You'll need to have [created a Vonage account](https://dashboard.nexmo.com/sign-
 - [Messages](https://developer.vonage.com/en/messages/overview)
 - [Verify](https://developer.vonage.com/en/verify/overview)
 - [Voice](https://developer.vonage.com/en/voice/voice-api/overview)
+- [Number Insight](https://developer.vonage.com/en/number-insight/overview)
 - [SMS](https://developer.vonage.com/en/messaging/sms/overview)
 - [Conversion](https://developer.vonage.com/en/messaging/conversion-api/overview)
 - [Redact](https://developer.vonage.com/en/redact/overview)
diff --git a/pom.xml b/pom.xml
index d149214..c9fbb15 100644
--- a/pom.xml
+++ b/pom.xml
@@ -5,7 +5,7 @@
 
   <groupId>com.vonage</groupId>
   <artifactId>server-sdk-kotlin</artifactId>
-  <version>0.4.0</version>
+  <version>0.5.0</version>
 
   <name>Vonage Kotlin Server SDK</name>
   <description>Kotlin client for Vonage APIs</description>
@@ -59,7 +59,7 @@
     <dependency>
       <groupId>com.vonage</groupId>
       <artifactId>server-sdk</artifactId>
-      <version>8.9.3</version>
+      <version>8.9.4</version>
     </dependency>
     <dependency>
       <groupId>org.jetbrains.kotlin</groupId>
diff --git a/src/main/kotlin/com/vonage/client/kt/NumberInsight.kt b/src/main/kotlin/com/vonage/client/kt/NumberInsight.kt
new file mode 100644
index 0000000..a12f7b7
--- /dev/null
+++ b/src/main/kotlin/com/vonage/client/kt/NumberInsight.kt
@@ -0,0 +1,27 @@
+package com.vonage.client.kt
+
+import com.vonage.client.insight.*
+
+class NumberInsight(private val niClient: InsightClient) {
+
+    fun basic(number: String, countryCode: String? = null): BasicInsightResponse =
+        niClient.getBasicNumberInsight(number, countryCode)
+
+    fun standard(number: String, countryCode: String? = null, cnam: Boolean? = null): StandardInsightResponse =
+        niClient.getStandardNumberInsight(StandardInsightRequest.builder()
+            .number(number).country(countryCode).cnam(cnam).build()
+        )
+
+    fun advanced(number: String, countryCode: String? = null, cnam: Boolean = false,
+                 realTimeData: Boolean = false): AdvancedInsightResponse =
+        niClient.getAdvancedNumberInsight(AdvancedInsightRequest.builder().async(false)
+            .number(number).country(countryCode).cnam(cnam).realTimeData(realTimeData).build()
+        )
+
+    fun advancedAsync(number: String, callbackUrl: String, countryCode: String? = null, cnam: Boolean = false) {
+        niClient.getAdvancedNumberInsight(
+            AdvancedInsightRequest.builder().async(true)
+                .number(number).country(countryCode).cnam(cnam).callback(callbackUrl).build()
+        )
+    }
+}
diff --git a/src/main/kotlin/com/vonage/client/kt/Redact.kt b/src/main/kotlin/com/vonage/client/kt/Redact.kt
index d66d347..d7e5a4f 100644
--- a/src/main/kotlin/com/vonage/client/kt/Redact.kt
+++ b/src/main/kotlin/com/vonage/client/kt/Redact.kt
@@ -4,23 +4,18 @@ import com.vonage.client.redact.*
 
 class Redact(private val redactClient: RedactClient) {
 
-    fun redactSms(messageId: String, direction: RedactRequest.Type = RedactRequest.Type.OUTBOUND) {
+    fun redactSms(messageId: String, direction: RedactRequest.Type = RedactRequest.Type.OUTBOUND) =
         redactClient.redactTransaction(messageId, RedactRequest.Product.SMS, direction)
-    }
 
-    fun redactMessage(messageId: String, direction: RedactRequest.Type = RedactRequest.Type.OUTBOUND) {
+    fun redactMessage(messageId: String, direction: RedactRequest.Type = RedactRequest.Type.OUTBOUND) =
         redactClient.redactTransaction(messageId, RedactRequest.Product.MESSAGES, direction)
-    }
 
-    fun redactCall(callId: String, direction: RedactRequest.Type = RedactRequest.Type.OUTBOUND) {
+    fun redactCall(callId: String, direction: RedactRequest.Type = RedactRequest.Type.OUTBOUND) =
         redactClient.redactTransaction(callId, RedactRequest.Product.VOICE, direction)
-    }
 
-    fun redactInsight(requestId: String) {
+    fun redactInsight(requestId: String) =
         redactClient.redactTransaction(requestId, RedactRequest.Product.NUMBER_INSIGHTS)
-    }
 
-    fun redactVerification(requestId: String) {
+    fun redactVerification(requestId: String) =
         redactClient.redactTransaction(requestId, RedactRequest.Product.VERIFY)
-    }
 }
diff --git a/src/main/kotlin/com/vonage/client/kt/Vonage.kt b/src/main/kotlin/com/vonage/client/kt/Vonage.kt
index 1187f63..8074596 100644
--- a/src/main/kotlin/com/vonage/client/kt/Vonage.kt
+++ b/src/main/kotlin/com/vonage/client/kt/Vonage.kt
@@ -12,6 +12,7 @@ class Vonage(init: VonageClient.Builder.() -> Unit) {
     val conversion = Conversion(vonageClient.conversionClient)
     val redact = Redact(vonageClient.redactClient)
     val verifyLegacy = VerifyLegacy(vonageClient.verifyClient)
+    val numberInsight = NumberInsight(vonageClient.insightClient)
 }
 
 fun VonageClient.Builder.authFromEnv(): VonageClient.Builder {
diff --git a/src/test/kotlin/com/vonage/client/kt/AbstractTest.kt b/src/test/kotlin/com/vonage/client/kt/AbstractTest.kt
index 92b49ce..6ad88bb 100644
--- a/src/test/kotlin/com/vonage/client/kt/AbstractTest.kt
+++ b/src/test/kotlin/com/vonage/client/kt/AbstractTest.kt
@@ -50,6 +50,8 @@ abstract class AbstractTest {
     protected val timestamp2Str = "2020-01-29T14:08:30.201Z"
     protected val timestamp2: Instant = Instant.parse(timestamp2Str)
     protected val currency = "EUR"
+    protected val exampleUrlBase = "https://example.com"
+    protected val callbackUrl = "$exampleUrlBase/callback"
 
     private val port = 8081
     private val wiremock: WireMockServer = WireMockServer(
diff --git a/src/test/kotlin/com/vonage/client/kt/NumberInsightTest.kt b/src/test/kotlin/com/vonage/client/kt/NumberInsightTest.kt
new file mode 100644
index 0000000..a82210c
--- /dev/null
+++ b/src/test/kotlin/com/vonage/client/kt/NumberInsightTest.kt
@@ -0,0 +1,262 @@
+package com.vonage.client.kt
+
+import com.vonage.client.insight.*
+import com.vonage.client.insight.CarrierDetails.NetworkType
+import com.vonage.client.insight.RoamingDetails.RoamingStatus
+import java.math.BigDecimal
+import kotlin.test.*
+
+class NumberInsightTest : AbstractTest() {
+    private val niClient = vonage.numberInsight
+    private val cnam = true
+    private val realTimeData = true
+    private val statusMessage = "Success"
+    private val nationalNumber = "07712 345689"
+    private val countryCode = "GB"
+    private val countryCodeIso3 = "GBR"
+    private val countryName = "United Kingdom"
+    private val countryPrefix = "44"
+    private val requestPrice = "0.035900000"
+    private val refundPrice = "0.01500000"
+    private val remainingBalance = "1.23456789"
+    private val reachable = Reachability.REACHABLE
+    private val ported = PortedStatus.ASSUMED_PORTED
+    private val callerType = CallerType.CONSUMER
+    private val firstName = "Max"
+    private val lastName = "Mustermann"
+    private val callerName = "$firstName $lastName"
+    private val originalNetworkCode = "12345"
+    private val originalName = "Acme Inc"
+    private val originalCountry = "CA"
+    private val originalNetworkType = NetworkType.PAGER
+    private val currentNetworkCode = networkCode
+    private val currentName = "Nexmo"
+    private val currentCountry = countryCode
+    private val currentNetworkType = NetworkType.LANDLINE_PREMIUM
+    private val roamingStatus = RoamingStatus.ROAMING
+    private val roamingCountryCode = "DE"
+    private val roamingNetworkCode = "26201"
+    private val roamingNetworkName = "Telekom Deutschland GmbH"
+    private val lookupOutcomeMessage = "Partial success - some fields populated"
+    private val validNumber = Validity.INFERRED_NOT_VALID
+    private val active = true
+    private val handsetStatus = "On"
+
+
+    private enum class InsightType {
+        BASIC, STANDARD, ADVANCED, ADVANCED_ASYNC
+    }
+
+    private fun mockInsight(type: InsightType, optionalParams: Boolean = false) {
+        val expectedRequestParams = mutableMapOf<String, Any>("number" to toNumber)
+        if (optionalParams) {
+            expectedRequestParams["country"] = countryCode
+            if (type != InsightType.BASIC) {
+                expectedRequestParams["cnam"] = cnam
+            }
+            if (type == InsightType.ADVANCED) {
+                expectedRequestParams["real_time_data"] = realTimeData
+            }
+        }
+
+        val expectedResponseParams = mutableMapOf<String, Any>(
+            "status" to 0,
+            "request_id" to testUuidStr,
+            "status_message" to statusMessage
+        )
+        if (type != InsightType.ADVANCED_ASYNC) {
+            expectedResponseParams.putAll(
+                mapOf(
+                    "international_format_number" to toNumber,
+                    "national_format_number" to nationalNumber,
+                    "country_code" to countryCode,
+                    "country_code_iso3" to countryCodeIso3,
+                    "country_name" to countryName,
+                    "country_prefix" to countryPrefix
+                )
+            )
+        }
+
+        if (type != InsightType.BASIC) {
+            expectedResponseParams.putAll(mapOf(
+                "request_price" to requestPrice,
+                "remaining_balance" to remainingBalance
+            ))
+
+            if (type == InsightType.ADVANCED_ASYNC) {
+                expectedResponseParams.putAll(mapOf(
+                    "number" to toNumber,
+                    "error_text" to statusMessage
+                ))
+            }
+            else {
+                val callerIdentity = mapOf(
+                    "caller_name" to callerName,
+                    "last_name" to lastName,
+                    "first_name" to firstName,
+                    "caller_type" to callerType.name.lowercase()
+                )
+
+                expectedResponseParams.putAll(
+                    mapOf(
+                        "refund_price" to refundPrice,
+                        "current_carrier" to mapOf(
+                            "network_code" to currentNetworkCode,
+                            "name" to currentName,
+                            "country" to currentCountry,
+                            "network_type" to currentNetworkType
+                        ),
+                        "ported" to ported.name.lowercase(),
+                        "original_carrier" to mapOf(
+                            "network_code" to originalNetworkCode,
+                            "name" to originalName,
+                            "country" to originalCountry,
+                            "network_type" to originalNetworkType
+                        ),
+                        "caller_identity" to callerIdentity
+                    )
+                )
+
+                if (type == InsightType.STANDARD) {
+                    expectedResponseParams.putAll(callerIdentity)
+                }
+            }
+        }
+
+        if (type == InsightType.ADVANCED) {
+            expectedResponseParams.putAll(mapOf(
+                "roaming" to mapOf(
+                    "status" to roamingStatus.name.lowercase(),
+                    "roaming_country_code" to roamingCountryCode,
+                    "roaming_network_code" to roamingNetworkCode,
+                    "roaming_network_name" to roamingNetworkName
+                ),
+                "reachable" to reachable,
+                "lookup_outcome" to 1,
+                "lookup_outcome_message" to lookupOutcomeMessage,
+                "valid_number" to validNumber.name.lowercase(),
+                "real_time_data" to mapOf(
+                    "active_status" to active,
+                    "handset_status" to handsetStatus
+                )
+            ))
+        }
+
+        mockPostQueryParams(
+            expectedUrl = "/ni/${type.name.lowercase().replace('_', '/')}/json",
+            expectedRequestParams = expectedRequestParams,
+            expectedResponseParams = expectedResponseParams
+        )
+    }
+
+    private fun assertBasicResponse(response: BasicInsightResponse) {
+        assertNotNull(response)
+        assertEquals(InsightStatus.SUCCESS, response.status)
+        assertEquals(statusMessage, response.statusMessage)
+        assertEquals(testUuidStr, response.requestId)
+        assertEquals(toNumber, response.internationalFormatNumber)
+        assertEquals(nationalNumber, response.nationalFormatNumber)
+        assertEquals(countryCode, response.countryCode)
+        assertEquals(countryCodeIso3, response.countryCodeIso3)
+        assertEquals(countryName, response.countryName)
+        assertEquals(countryPrefix, response.countryPrefix)
+    }
+
+    private fun assertStandardResponse(response: StandardInsightResponse) {
+        assertBasicResponse(response)
+        assertEquals(BigDecimal(requestPrice), response.requestPrice)
+        assertEquals(BigDecimal(refundPrice), response.refundPrice)
+        assertEquals(BigDecimal(remainingBalance), response.remainingBalance)
+        assertEquals(ported, response.ported)
+        if (response::class == StandardInsightResponse::class) {
+            assertEquals(firstName, response.firstName)
+            assertEquals(lastName, response.lastName)
+            assertEquals(callerName, response.callerName)
+            assertEquals(callerType, response.callerType)
+        }
+        val callerIdentity = response.callerIdentity
+        assertNotNull(callerIdentity)
+        assertEquals(firstName, callerIdentity.firstName)
+        assertEquals(lastName, callerIdentity.lastName)
+        assertEquals(callerName, callerIdentity.name)
+        assertEquals(callerType, callerIdentity.type)
+        val currentCarrier = response.currentCarrier
+        assertNotNull(currentCarrier)
+        assertEquals(currentName, currentCarrier.name)
+        assertEquals(currentCountry, currentCarrier.country)
+        assertEquals(currentNetworkType, currentCarrier.networkType)
+        assertEquals(currentNetworkCode, currentCarrier.networkCode)
+        val originalCarrier = response.originalCarrier
+        assertNotNull(originalCarrier)
+        assertEquals(originalName, originalCarrier.name)
+        assertEquals(originalCountry, originalCarrier.country)
+        assertEquals(originalNetworkType, originalCarrier.networkType)
+        assertEquals(originalNetworkCode, originalCarrier.networkCode)
+    }
+
+    private fun assertAdvancedResponse(response: AdvancedInsightResponse) {
+        assertStandardResponse(response)
+        assertEquals(reachable, response.reachability)
+        assertEquals(LookupOutcome.PARTIAL_SUCCESS, response.lookupOutcome)
+        assertEquals(lookupOutcomeMessage, response.lookupOutcomeMessage)
+        assertEquals(validNumber, response.validNumber)
+        val rtd = response.realTimeData
+        assertNotNull(rtd)
+        assertEquals(active, rtd.activeStatus)
+        assertEquals(handsetStatus, rtd.handsetStatus)
+        val roaming = response.roaming
+        assertNotNull(roaming)
+        assertEquals(roamingStatus, roaming.status)
+        assertEquals(roamingCountryCode, roaming.roamingCountryCode)
+        assertEquals(roamingNetworkCode, roaming.roamingNetworkCode)
+        assertEquals(roamingNetworkName, roaming.roamingNetworkName)
+    }
+
+    @Test
+    fun `basic insight required params`() {
+        mockInsight(InsightType.BASIC, false)
+        assertBasicResponse(niClient.basic(toNumber))
+    }
+
+    @Test
+    fun `basic insight all params`() {
+        mockInsight(InsightType.BASIC, true)
+        assertBasicResponse(niClient.basic(toNumber, countryCode))
+    }
+
+    @Test
+    fun `standard insight required params`() {
+        mockInsight(InsightType.STANDARD, false)
+        assertStandardResponse(niClient.standard(toNumber))
+    }
+
+    @Test
+    fun `standard insight all params`() {
+        mockInsight(InsightType.STANDARD, true)
+        assertStandardResponse(niClient.standard(toNumber, countryCode, cnam))
+    }
+
+    @Test
+    fun `advanced insight required params`() {
+        mockInsight(InsightType.ADVANCED, false)
+        assertAdvancedResponse(niClient.advanced(toNumber))
+    }
+
+    @Test
+    fun `advanced insight all params`() {
+        mockInsight(InsightType.ADVANCED, true)
+        assertAdvancedResponse(niClient.advanced(toNumber, countryCode, cnam, realTimeData))
+    }
+
+    @Test
+    fun `advanced async insight required params`() {
+        mockInsight(InsightType.ADVANCED_ASYNC, false)
+        niClient.advancedAsync(toNumber, callbackUrl)
+    }
+
+    @Test
+    fun `advanced async insight all params`() {
+        mockInsight(InsightType.ADVANCED_ASYNC, true)
+        niClient.advancedAsync(toNumber, callbackUrl, countryCode, cnam)
+    }
+}
\ No newline at end of file