diff --git a/Sources/ipinfoKit/IPInfoPlus.swift b/Sources/ipinfoKit/IPInfoPlus.swift
new file mode 100644
index 0000000..8a0f7c7
--- /dev/null
+++ b/Sources/ipinfoKit/IPInfoPlus.swift
@@ -0,0 +1,232 @@
+import Foundation
+
+@available(iOS 13.0.0, macOS 10.15.0, *)
+@MainActor
+open class IPInfoPlus {
+  private let urlSession: URLSession
+  private let jsonDecoder: JSONDecoder = {
+    let decoder = JSONDecoder()
+    decoder.keyDecodingStrategy = .convertFromSnakeCase
+    return decoder
+  }()
+
+  private var token: String
+
+  public init(token: String, urlSession: URLSession = .shared) {
+    self.token = token
+    self.urlSession = urlSession
+  }
+
+  public func lookup(ip: String? = nil) async throws -> Response {
+    let endpoint = ip ?? "me"
+    var urlRequest = URLRequest(url: URL(string: "https://api.ipinfo.io/lookup/\(endpoint)")!)
+    urlRequest.allHTTPHeaderFields = [
+      "accept": "application/json",
+      "authorization": "Bearer \(token)",
+      "content-type": "application/json",
+      "user-agent": "IPinfoClient/Swift/\(Constants.SDK_VERSION)",
+    ]
+
+    let (data, response) = try await urlSession.data(for: urlRequest)
+
+    let httpResponse = response as! HTTPURLResponse
+    guard (200..<300).contains(httpResponse.statusCode) else {
+      throw IPInfoPlus.Error.unacceptableStatusCode(httpResponse.statusCode)
+    }
+
+    return try jsonDecoder.decode(Response.self, from: data)
+  }
+}
+
+@available(iOS 13.0.0, macOS 10.15.0, *)
+extension IPInfoPlus {
+  public enum Response: Equatable, Decodable {
+    private enum CodingKeys: CodingKey {
+      case bogon
+    }
+
+    case ip(IPResponse)
+    case bogon(BogonResponse)
+
+    public init(from decoder: any Decoder) throws {
+      let container = try decoder.container(keyedBy: CodingKeys.self)
+      let isBogon = try container.decodeIfPresent(Bool.self, forKey: .bogon) ?? false
+
+      if isBogon {
+        self = .bogon(try BogonResponse(from: decoder))
+      } else {
+        self = .ip(try IPResponse(from: decoder))
+      }
+    }
+  }
+
+  public struct BogonResponse: Equatable, Decodable {
+    public let ip: String
+
+    public init(ip: String) {
+      self.ip = ip
+    }
+  }
+
+  public struct IPResponse: Equatable, Decodable {
+    public let ip: String
+    public let hostname: String?
+    public let geo: Geo
+    public let `as`: AS
+    public let isAnonymous: Bool
+    public let isAnycast: Bool
+    public let isHosting: Bool
+    public let isMobile: Bool
+    public let isSatellite: Bool
+    public let mobile: Mobile
+    public let anonymous: Anonymous
+
+    public init(
+      ip: String,
+      hostname: String?,
+      geo: Geo,
+      as: AS,
+      isAnonymous: Bool,
+      isAnycast: Bool,
+      isHosting: Bool,
+      isMobile: Bool,
+      isSatellite: Bool,
+      mobile: Mobile,
+      anonymous: Anonymous
+    ) {
+      self.ip = ip
+      self.hostname = hostname
+      self.geo = geo
+      self.`as` = `as`
+      self.isAnonymous = isAnonymous
+      self.isAnycast = isAnycast
+      self.isHosting = isHosting
+      self.isMobile = isMobile
+      self.isSatellite = isSatellite
+      self.mobile = mobile
+      self.anonymous = anonymous
+    }
+  }
+
+  public struct Geo: Equatable, Decodable {
+    public let city: String
+    public let region: String
+    public let regionCode: String
+    public let country: String
+    public let countryCode: String
+    public let continent: String
+    public let continentCode: String
+    public let latitude: Double
+    public let longitude: Double
+    public let timezone: String
+    public let postalCode: String
+    public let dmaCode: String?
+    public let geonameId: String?
+    public let radius: Int?
+    public let lastChanged: String?
+
+    public init(
+      city: String,
+      region: String,
+      regionCode: String,
+      country: String,
+      countryCode: String,
+      continent: String,
+      continentCode: String,
+      latitude: Double,
+      longitude: Double,
+      timezone: String,
+      postalCode: String,
+      dmaCode: String? = nil,
+      geonameId: String? = nil,
+      radius: Int? = nil,
+      lastChanged: String? = nil
+    ) {
+      self.city = city
+      self.region = region
+      self.regionCode = regionCode
+      self.country = country
+      self.countryCode = countryCode
+      self.continent = continent
+      self.continentCode = continentCode
+      self.latitude = latitude
+      self.longitude = longitude
+      self.timezone = timezone
+      self.postalCode = postalCode
+      self.dmaCode = dmaCode
+      self.geonameId = geonameId
+      self.radius = radius
+      self.lastChanged = lastChanged
+    }
+  }
+
+  public struct AS: Equatable, Decodable {
+    public let asn: String
+    public let name: String
+    public let domain: String
+    public let type: String
+    public let lastChanged: String?
+
+    public init(
+      asn: String,
+      name: String,
+      domain: String,
+      type: String,
+      lastChanged: String? = nil
+    ) {
+      self.asn = asn
+      self.name = name
+      self.domain = domain
+      self.type = type
+      self.lastChanged = lastChanged
+    }
+  }
+
+  public struct Mobile: Equatable, Decodable {
+    public let name: String?
+    public let mcc: String?
+    public let mnc: String?
+
+    public init(name: String? = nil, mcc: String? = nil, mnc: String? = nil) {
+      self.name = name
+      self.mcc = mcc
+      self.mnc = mnc
+    }
+  }
+
+  public struct Anonymous: Equatable, Decodable {
+    public let isProxy: Bool
+    public let isRelay: Bool
+    public let isTor: Bool
+    public let isVpn: Bool
+    public let name: String?
+
+    public init(
+      isProxy: Bool,
+      isRelay: Bool,
+      isTor: Bool,
+      isVpn: Bool,
+      name: String? = nil
+    ) {
+      self.isProxy = isProxy
+      self.isRelay = isRelay
+      self.isTor = isTor
+      self.isVpn = isVpn
+      self.name = name
+    }
+  }
+}
+
+@available(iOS 13.0.0, macOS 10.15.0, *)
+extension IPInfoPlus {
+  public enum Error: Swift.Error, LocalizedError {
+    case unacceptableStatusCode(Int)
+
+    public var errorDescription: String? {
+      switch self {
+      case .unacceptableStatusCode(let statusCode):
+        return "Response status code was unacceptable: \(statusCode)."
+      }
+    }
+  }
+}
diff --git a/Tests/ipinfoKitTests/IPInfoPlusTests.swift b/Tests/ipinfoKitTests/IPInfoPlusTests.swift
new file mode 100644
index 0000000..f54aa66
--- /dev/null
+++ b/Tests/ipinfoKitTests/IPInfoPlusTests.swift
@@ -0,0 +1,88 @@
+import ipinfoKit
+
+import Foundation
+import Testing
+
+@MainActor
+struct IPInfoPlusTests {
+  @Test func plusGoogleDNSTest() async throws {
+    let client = IPInfoPlus(token: ProcessInfo.processInfo.environment["IPInfoKitAccessToken"] ?? "")
+
+    let response = try await client.lookup(ip: "8.8.8.8")
+
+    guard case .ip(let ipResponse) = response else {
+      Issue.record("Expected IP response, got bogon")
+      return
+    }
+
+    // Test basic fields
+    #expect(ipResponse.ip == "8.8.8.8")
+    #expect(ipResponse.hostname != nil)
+
+    // Test geo fields
+    #expect(!ipResponse.geo.city.isEmpty)
+    #expect(!ipResponse.geo.region.isEmpty)
+    #expect(!ipResponse.geo.regionCode.isEmpty)
+    #expect(!ipResponse.geo.country.isEmpty)
+    #expect(!ipResponse.geo.countryCode.isEmpty)
+    #expect(!ipResponse.geo.continent.isEmpty)
+    #expect(!ipResponse.geo.continentCode.isEmpty)
+    #expect(ipResponse.geo.latitude != 0.0)
+    #expect(ipResponse.geo.longitude != 0.0)
+    #expect(!ipResponse.geo.timezone.isEmpty)
+    #expect(!ipResponse.geo.postalCode.isEmpty)
+    #expect(ipResponse.geo.dmaCode != nil)
+    #expect(ipResponse.geo.geonameId != nil)
+    #expect(ipResponse.geo.radius != nil)
+    #expect(ipResponse.geo.lastChanged == nil)
+
+    // Test AS fields
+    #expect(ipResponse.as.asn == "AS15169")
+    #expect(!ipResponse.as.name.isEmpty)
+    #expect(!ipResponse.as.domain.isEmpty)
+    #expect(!ipResponse.as.type.isEmpty)
+    #expect(ipResponse.as.lastChanged != nil)
+
+    // Test network flags
+    #expect(!ipResponse.isAnonymous)
+    #expect(ipResponse.isAnycast)
+    #expect(ipResponse.isHosting)
+    #expect(!ipResponse.isMobile)
+    #expect(!ipResponse.isSatellite)
+
+    // Test anonymous object
+    #expect(!ipResponse.anonymous.isProxy)
+    #expect(!ipResponse.anonymous.isRelay)
+    #expect(!ipResponse.anonymous.isTor)
+    #expect(!ipResponse.anonymous.isVpn)
+
+    // Test mobile object (can be empty for non-mobile IPs)
+    #expect(ipResponse.mobile.name == nil)
+    #expect(ipResponse.mobile.mcc == nil)
+    #expect(ipResponse.mobile.mnc == nil)
+  }
+
+  @Test func plusBogonTest() async throws {
+    let client = IPInfoPlus(token: ProcessInfo.processInfo.environment["IPInfoKitAccessToken"] ?? "")
+
+    let response = try await client.lookup(ip: "192.168.1.1")
+
+    #expect(response == .bogon(.init(ip: "192.168.1.1")))
+  }
+
+  @Test func plusNoIPTest() async throws {
+    let client = IPInfoPlus(token: ProcessInfo.processInfo.environment["IPInfoKitAccessToken"] ?? "")
+
+    let response = try await client.lookup()
+
+    guard case .ip(let ipResponse) = response else {
+      Issue.record("Expected IP response, got bogon")
+      return
+    }
+
+    // Should return details for the caller's IP
+    #expect(ipResponse.ip != "")
+    #expect(ipResponse.hostname != nil)
+    #expect(!ipResponse.geo.country.isEmpty)
+  }
+}