diff --git a/example/lookup-plus/main.go b/example/lookup-plus/main.go
new file mode 100644
index 0000000..a25a548
--- /dev/null
+++ b/example/lookup-plus/main.go
@@ -0,0 +1,72 @@
+package main
+
+import (
+	"fmt"
+	"log"
+	"net"
+	"os"
+
+	"github.com/ipinfo/go/v2/ipinfo"
+)
+
+func main() {
+	client := ipinfo.NewPlusClient(nil, nil, os.Getenv("IPINFO_TOKEN"))
+
+	ip := net.ParseIP("8.8.8.8")
+	info, err := client.GetIPInfo(ip)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	fmt.Printf("IP: %s\n", info.IP)
+	fmt.Printf("Hostname: %s\n", info.Hostname)
+	if info.Geo != nil {
+		fmt.Printf("City: %s\n", info.Geo.City)
+		fmt.Printf("Region: %s (%s)\n", info.Geo.Region, info.Geo.RegionCode)
+		fmt.Printf("Country: %s (%s)\n", info.Geo.Country, info.Geo.CountryCode)
+		fmt.Printf("Continent: %s (%s)\n", info.Geo.Continent, info.Geo.ContinentCode)
+		fmt.Printf("Location: %f, %f\n", info.Geo.Latitude, info.Geo.Longitude)
+		fmt.Printf("Timezone: %s\n", info.Geo.Timezone)
+		fmt.Printf("Postal Code: %s\n", info.Geo.PostalCode)
+	}
+	if info.AS != nil {
+		fmt.Printf("ASN: %s\n", info.AS.ASN)
+		fmt.Printf("AS Name: %s\n", info.AS.Name)
+		fmt.Printf("AS Domain: %s\n", info.AS.Domain)
+		fmt.Printf("AS Type: %s\n", info.AS.Type)
+	}
+	if info.Mobile != nil {
+		fmt.Printf("Mobile - Name: %s, MCC: %s, MNC: %s\n",
+			info.Mobile.Name, info.Mobile.MCC, info.Mobile.MNC)
+	}
+	if info.Anonymous != nil {
+		fmt.Printf("Anonymous - Proxy: %v, Relay: %v, Tor: %v, VPN: %v\n",
+			info.Anonymous.IsProxy, info.Anonymous.IsRelay, info.Anonymous.IsTor, info.Anonymous.IsVPN)
+	}
+	fmt.Printf("Anonymous: %v\n", info.IsAnonymous)
+	fmt.Printf("Anycast: %v\n", info.IsAnycast)
+	fmt.Printf("Hosting: %v\n", info.IsHosting)
+	fmt.Printf("Mobile: %v\n", info.IsMobile)
+	fmt.Printf("Satellite: %v\n", info.IsSatellite)
+	if info.Abuse != nil {
+		fmt.Printf("Abuse Contact - Email: %s, Name: %s\n", info.Abuse.Email, info.Abuse.Name)
+	}
+	if info.Company != nil {
+		fmt.Printf("Company - Name: %s, Domain: %s, Type: %s\n",
+			info.Company.Name, info.Company.Domain, info.Company.Type)
+	}
+	if info.Privacy != nil {
+		fmt.Printf("Privacy - VPN: %v, Proxy: %v, Tor: %v, Relay: %v, Hosting: %v\n",
+			info.Privacy.VPN, info.Privacy.Proxy, info.Privacy.Tor, info.Privacy.Relay, info.Privacy.Hosting)
+	}
+	if info.Domains != nil {
+		fmt.Printf("Domains - Total: %d\n", info.Domains.Total)
+		if len(info.Domains.Domains) > 0 {
+			maxDomains := 3
+			if len(info.Domains.Domains) < maxDomains {
+				maxDomains = len(info.Domains.Domains)
+			}
+			fmt.Printf("Sample Domains: %v\n", info.Domains.Domains[:maxDomains])
+		}
+	}
+}
diff --git a/ipinfo/ipinfo.go b/ipinfo/ipinfo.go
index c7f46c7..2b39301 100644
--- a/ipinfo/ipinfo.go
+++ b/ipinfo/ipinfo.go
@@ -9,9 +9,13 @@ var DefaultLiteClient *LiteClient
 // Package-level Core bundle client
 var DefaultCoreClient *CoreClient
 
+// Package-level Plus bundle client
+var DefaultPlusClient *PlusClient
+
 func init() {
 	// Create global clients for legacy, Lite, Core APIs
 	DefaultClient = NewClient(nil, nil, "")
 	DefaultLiteClient = NewLiteClient(nil, nil, "")
 	DefaultCoreClient = NewCoreClient(nil, nil, "")
+	DefaultPlusClient = NewPlusClient(nil, nil, "")
 }
diff --git a/ipinfo/plus.go b/ipinfo/plus.go
new file mode 100644
index 0000000..1a3abc3
--- /dev/null
+++ b/ipinfo/plus.go
@@ -0,0 +1,290 @@
+package ipinfo
+
+import (
+	"context"
+	"encoding/json"
+	"io"
+	"net"
+	"net/http"
+	"net/netip"
+	"net/url"
+	"strings"
+)
+
+const (
+	defaultPlusBaseURL = "https://api.ipinfo.io/lookup/"
+)
+
+// PlusClient is a client for the IPinfo Plus API.
+type PlusClient struct {
+	// HTTP client used to communicate with the API.
+	client *http.Client
+
+	// Base URL for API requests.
+	BaseURL *url.URL
+
+	// User agent used when communicating with the IPinfo API.
+	UserAgent string
+
+	// Cache interface implementation to prevent API quota overuse.
+	Cache *Cache
+
+	// The API token used for authorization.
+	Token string
+}
+
+// Plus represents the response from the IPinfo Plus API /lookup endpoint.
+type Plus struct {
+	IP          net.IP         `json:"ip"`
+	Hostname    string         `json:"hostname,omitempty"`
+	Bogon       bool           `json:"bogon,omitempty"`
+	Geo         *PlusGeo       `json:"geo,omitempty"`
+	AS          *PlusAS        `json:"as,omitempty"`
+	Mobile      *PlusMobile    `json:"mobile,omitempty"`
+	Anonymous   *PlusAnonymous `json:"anonymous,omitempty"`
+	IsAnonymous bool           `json:"is_anonymous"`
+	IsAnycast   bool           `json:"is_anycast"`
+	IsHosting   bool           `json:"is_hosting"`
+	IsMobile    bool           `json:"is_mobile"`
+	IsSatellite bool           `json:"is_satellite"`
+	Abuse       *PlusAbuse     `json:"abuse,omitempty"`
+	Company     *PlusCompany   `json:"company,omitempty"`
+	Privacy     *PlusPrivacy   `json:"privacy,omitempty"`
+	Domains     *PlusDomains   `json:"domains,omitempty"`
+}
+
+// PlusGeo represents the geo object in Plus API response.
+type PlusGeo struct {
+	City          string  `json:"city,omitempty"`
+	Region        string  `json:"region,omitempty"`
+	RegionCode    string  `json:"region_code,omitempty"`
+	Country       string  `json:"country,omitempty"`
+	CountryCode   string  `json:"country_code,omitempty"`
+	Continent     string  `json:"continent,omitempty"`
+	ContinentCode string  `json:"continent_code,omitempty"`
+	Latitude      float64 `json:"latitude"`
+	Longitude     float64 `json:"longitude"`
+	Timezone      string  `json:"timezone,omitempty"`
+	PostalCode    string  `json:"postal_code,omitempty"`
+	DMACode       string  `json:"dma_code,omitempty"`
+	GeonameID     string  `json:"geoname_id,omitempty"`
+	Radius        int     `json:"radius"`
+	LastChanged   string  `json:"last_changed,omitempty"`
+
+	// Extended fields using the same country data as legacy Core API
+	CountryName     string          `json:"-"`
+	IsEU            bool            `json:"-"`
+	CountryFlag     CountryFlag     `json:"-"`
+	CountryFlagURL  string          `json:"-"`
+	CountryCurrency CountryCurrency `json:"-"`
+	ContinentInfo   Continent       `json:"-"`
+}
+
+// PlusAS represents the AS object in Plus API response.
+type PlusAS struct {
+	ASN         string `json:"asn"`
+	Name        string `json:"name"`
+	Domain      string `json:"domain"`
+	Type        string `json:"type"`
+	LastChanged string `json:"last_changed,omitempty"`
+}
+
+// PlusMobile represents the mobile object in Plus API response.
+type PlusMobile struct {
+	Name string `json:"name,omitempty"`
+	MCC  string `json:"mcc,omitempty"`
+	MNC  string `json:"mnc,omitempty"`
+}
+
+// PlusAnonymous represents the anonymous object in Plus API response.
+type PlusAnonymous struct {
+	IsProxy bool   `json:"is_proxy"`
+	IsRelay bool   `json:"is_relay"`
+	IsTor   bool   `json:"is_tor"`
+	IsVPN   bool   `json:"is_vpn"`
+	Name    string `json:"name,omitempty"`
+}
+
+// PlusAbuse represents the abuse object in Plus API response.
+type PlusAbuse struct {
+	Address     string `json:"address,omitempty"`
+	Country     string `json:"country,omitempty"`
+	CountryName string `json:"country_name,omitempty"`
+	Email       string `json:"email,omitempty"`
+	Name        string `json:"name,omitempty"`
+	Network     string `json:"network,omitempty"`
+	Phone       string `json:"phone,omitempty"`
+}
+
+// PlusCompany represents the company object in Plus API response.
+type PlusCompany struct {
+	Name   string `json:"name,omitempty"`
+	Domain string `json:"domain,omitempty"`
+	Type   string `json:"type,omitempty"`
+}
+
+// PlusPrivacy represents the privacy object in Plus API response.
+type PlusPrivacy struct {
+	VPN     bool   `json:"vpn"`
+	Proxy   bool   `json:"proxy"`
+	Tor     bool   `json:"tor"`
+	Relay   bool   `json:"relay"`
+	Hosting bool   `json:"hosting"`
+	Service string `json:"service,omitempty"`
+}
+
+// PlusDomains represents the domains object in Plus API response.
+type PlusDomains struct {
+	IP      string   `json:"ip,omitempty"`
+	Total   uint64   `json:"total"`
+	Domains []string `json:"domains,omitempty"`
+}
+
+func (v *Plus) enrichGeo() {
+	if v.Geo != nil && v.Geo.CountryCode != "" {
+		v.Geo.CountryName = GetCountryName(v.Geo.CountryCode)
+		v.Geo.IsEU = IsEU(v.Geo.CountryCode)
+		v.Geo.CountryFlag.Emoji = GetCountryFlagEmoji(v.Geo.CountryCode)
+		v.Geo.CountryFlag.Unicode = GetCountryFlagUnicode(v.Geo.CountryCode)
+		v.Geo.CountryFlagURL = GetCountryFlagURL(v.Geo.CountryCode)
+		v.Geo.CountryCurrency.Code = GetCountryCurrencyCode(v.Geo.CountryCode)
+		v.Geo.CountryCurrency.Symbol = GetCountryCurrencySymbol(v.Geo.CountryCode)
+		v.Geo.ContinentInfo.Code = GetContinentCode(v.Geo.CountryCode)
+		v.Geo.ContinentInfo.Name = GetContinentName(v.Geo.CountryCode)
+	}
+	if v.Abuse != nil && v.Abuse.Country != "" {
+		v.Abuse.CountryName = GetCountryName(v.Abuse.Country)
+	}
+}
+
+// NewPlusClient creates a new IPinfo Plus API client.
+func NewPlusClient(httpClient *http.Client, cache *Cache, token string) *PlusClient {
+	if httpClient == nil {
+		httpClient = http.DefaultClient
+	}
+
+	baseURL, _ := url.Parse(defaultPlusBaseURL)
+	return &PlusClient{
+		client:    httpClient,
+		BaseURL:   baseURL,
+		UserAgent: defaultUserAgent,
+		Cache:     cache,
+		Token:     token,
+	}
+}
+
+// GetIPInfo returns the Plus details for the specified IP.
+func (c *PlusClient) GetIPInfo(ip net.IP) (*Plus, error) {
+	if ip != nil && isBogon(netip.MustParseAddr(ip.String())) {
+		bogonResponse := new(Plus)
+		bogonResponse.Bogon = true
+		bogonResponse.IP = ip
+		return bogonResponse, nil
+	}
+	relUrl := ""
+	if ip != nil {
+		relUrl = ip.String()
+	}
+
+	if c.Cache != nil {
+		if res, err := c.Cache.Get(cacheKey(relUrl)); err == nil {
+			return res.(*Plus), nil
+		}
+	}
+
+	req, err := c.newRequest(nil, "GET", relUrl, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	res := new(Plus)
+	if _, err := c.do(req, res); err != nil {
+		return nil, err
+	}
+
+	res.enrichGeo()
+
+	if c.Cache != nil {
+		if err := c.Cache.Set(cacheKey(relUrl), res); err != nil {
+			return res, err
+		}
+	}
+
+	return res, nil
+}
+
+func (c *PlusClient) newRequest(ctx context.Context,
+	method string,
+	urlStr string,
+	body io.Reader,
+) (*http.Request, error) {
+	if ctx == nil {
+		ctx = context.Background()
+	}
+
+	u := new(url.URL)
+	baseURL := c.BaseURL
+	if rel, err := url.Parse(urlStr); err == nil {
+		u = baseURL.ResolveReference(rel)
+	} else if strings.ContainsRune(urlStr, ':') {
+		// IPv6 strings fail to parse as URLs, so let's add it as a URL Path.
+		*u = *baseURL
+		u.Path += urlStr
+	} else {
+		return nil, err
+	}
+
+	// get `http` package request object.
+	req, err := http.NewRequestWithContext(ctx, method, u.String(), body)
+	if err != nil {
+		return nil, err
+	}
+
+	// set common headers.
+	req.Header.Set("Accept", "application/json")
+	if c.UserAgent != "" {
+		req.Header.Set("User-Agent", c.UserAgent)
+	}
+	if c.Token != "" {
+		req.Header.Set("Authorization", "Bearer "+c.Token)
+	}
+
+	return req, nil
+}
+
+func (c *PlusClient) do(
+	req *http.Request,
+	v interface{},
+) (*http.Response, error) {
+	resp, err := c.client.Do(req)
+	if err != nil {
+		return nil, err
+	}
+	defer resp.Body.Close()
+
+	err = checkResponse(resp)
+	if err != nil {
+		// even though there was an error, we still return the response
+		// in case the caller wants to inspect it further
+		return resp, err
+	}
+
+	if v != nil {
+		if w, ok := v.(io.Writer); ok {
+			io.Copy(w, resp.Body)
+		} else {
+			err = json.NewDecoder(resp.Body).Decode(v)
+			if err == io.EOF {
+				// ignore EOF errors caused by empty response body
+				err = nil
+			}
+		}
+	}
+
+	return resp, err
+}
+
+// GetIPInfoPlus returns the Plus details for the specified IP.
+func GetIPInfoPlus(ip net.IP) (*Plus, error) {
+	return DefaultPlusClient.GetIPInfo(ip)
+}