diff --git a/pkg/passive/sources.go b/pkg/passive/sources.go
index b70b6d14..64f4dd8e 100644
--- a/pkg/passive/sources.go
+++ b/pkg/passive/sources.go
@@ -48,6 +48,7 @@ import (
 	"github.com/projectdiscovery/subfinder/v2/pkg/subscraping/sources/securitytrails"
 	"github.com/projectdiscovery/subfinder/v2/pkg/subscraping/sources/shodan"
 	"github.com/projectdiscovery/subfinder/v2/pkg/subscraping/sources/sitedossier"
+	"github.com/projectdiscovery/subfinder/v2/pkg/subscraping/sources/thc"
 	"github.com/projectdiscovery/subfinder/v2/pkg/subscraping/sources/threatbook"
 	"github.com/projectdiscovery/subfinder/v2/pkg/subscraping/sources/threatcrowd"
 	"github.com/projectdiscovery/subfinder/v2/pkg/subscraping/sources/virustotal"
@@ -108,6 +109,7 @@ var AllSources = [...]subscraping.Source{
 	&builtwith.Source{},
 	&hudsonrock.Source{},
 	&digitalyama.Source{},
+	&thc.Source{},
 }
 
 var sourceWarnings = mapsutil.NewSyncLockMap[string, string](
diff --git a/pkg/passive/sources_test.go b/pkg/passive/sources_test.go
index 9c2676b0..a1f99be8 100644
--- a/pkg/passive/sources_test.go
+++ b/pkg/passive/sources_test.go
@@ -60,6 +60,7 @@ var (
 		"builtwith",
 		"hudsonrock",
 		"digitalyama",
+		"thc",
 	}
 
 	expectedDefaultSources = []string{
@@ -100,6 +101,7 @@ var (
 		// "reconcloud",
 		"builtwith",
 		"digitalyama",
+		"thc",
 	}
 
 	expectedDefaultRecursiveSources = []string{
diff --git a/pkg/subscraping/sources/thc/thc.go b/pkg/subscraping/sources/thc/thc.go
new file mode 100644
index 00000000..23806219
--- /dev/null
+++ b/pkg/subscraping/sources/thc/thc.go
@@ -0,0 +1,127 @@
+// Package thc logic
+package thc
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"time"
+
+	jsoniter "github.com/json-iterator/go"
+
+	"github.com/projectdiscovery/subfinder/v2/pkg/subscraping"
+)
+
+type response struct {
+	Domains []struct {
+		Domain string `json:"domain"`
+	} `json:"domains"`
+	NextPageState string `json:"next_page_state"`
+}
+
+// Source is the passive scraping agent
+type Source struct {
+	timeTaken time.Duration
+	errors    int
+	results   int
+	skipped   bool
+}
+
+type requestBody struct {
+	Domain    string `json:"domain"`
+	PageState string `json:"page_state"`
+	Limit     int    `json:"limit"`
+}
+
+// Run function returns all subdomains found with the service
+func (s *Source) Run(ctx context.Context, domain string, session *subscraping.Session) <-chan subscraping.Result {
+	results := make(chan subscraping.Result)
+	s.errors = 0
+	s.results = 0
+
+	go func() {
+		defer func(startTime time.Time) {
+			s.timeTaken = time.Since(startTime)
+			close(results)
+		}(time.Now())
+
+		var pageState string
+		headers := map[string]string{"Content-Type": "application/json"}
+		apiURL := "https://ip.thc.org/api/v1/lookup/subdomains"
+
+		for {
+			reqBody := requestBody{
+				Domain:    domain,
+				PageState: pageState,
+				Limit:     1000,
+			}
+
+			bodyBytes, err := json.Marshal(reqBody)
+			if err != nil {
+				results <- subscraping.Result{Source: s.Name(), Type: subscraping.Error, Error: err}
+				s.errors++
+				return
+			}
+
+			resp, err := session.Post(ctx, apiURL, "", headers, bytes.NewReader(bodyBytes))
+			if err != nil {
+				results <- subscraping.Result{Source: s.Name(), Type: subscraping.Error, Error: err}
+				s.errors++
+				session.DiscardHTTPResponse(resp)
+				return
+			}
+
+			var thcResponse response
+			err = jsoniter.NewDecoder(resp.Body).Decode(&thcResponse)
+			session.DiscardHTTPResponse(resp)
+			if err != nil {
+				results <- subscraping.Result{Source: s.Name(), Type: subscraping.Error, Error: err}
+				s.errors++
+				return
+			}
+
+			for _, domainRecord := range thcResponse.Domains {
+				results <- subscraping.Result{Source: s.Name(), Type: subscraping.Subdomain, Value: domainRecord.Domain}
+				s.results++
+			}
+
+			pageState = thcResponse.NextPageState
+
+			if pageState == "" {
+				break
+			}
+		}
+	}()
+
+	return results
+}
+
+// Name returns the name of the source
+func (s *Source) Name() string {
+	return "thc"
+}
+
+func (s *Source) IsDefault() bool {
+	return true
+}
+
+func (s *Source) HasRecursiveSupport() bool {
+	return false
+}
+
+func (s *Source) NeedsKey() bool {
+	return false
+}
+
+func (s *Source) AddApiKeys(_ []string) {
+	// No API keys needed for THC
+}
+
+func (s *Source) Statistics() subscraping.Statistics {
+	return subscraping.Statistics{
+		Errors:    s.errors,
+		Results:   s.results,
+		TimeTaken: s.timeTaken,
+		Skipped:   s.skipped,
+	}
+}