diff --git a/Makefile b/Makefile
index 4baaffc..9aea0d4 100644
--- a/Makefile
+++ b/Makefile
@@ -40,7 +40,7 @@ compile-linux:
 	gcc -O3 $(LINIX_FLAGS) src/sqlite3-unicode.c src/unicode/*.c -o dist/unicode.so
 	gcc -O3 $(LINIX_FLAGS) src/sqlite3-uuid.c src/uuid/*.c -o dist/uuid.so
 	gcc -O3 $(LINIX_FLAGS) src/sqlite3-vsv.c src/vsv/*.c -o dist/vsv.so -lm
-	gcc -O1 $(LINIX_FLAGS) -include src/regexp/constants.h src/sqlite3-sqlean.c src/crypto/*.c src/define/*.c src/fileio/*.c src/fuzzy/*.c src/math/*.c src/regexp/*.c src/regexp/pcre2/*.c src/stats/*.c src/text/*.c src/unicode/*.c src/uuid/*.c src/vsv/*.c -o dist/sqlean.so -lm
+	gcc -O1 $(LINIX_FLAGS) -include src/regexp/constants.h src/sqlite3-sqlean.c src/crypto/*.c src/define/*.c src/fileio/*.c src/fuzzy/*.c src/ipaddr/*.c src/math/*.c src/regexp/*.c src/regexp/pcre2/*.c src/stats/*.c src/text/*.c src/unicode/*.c src/uuid/*.c src/vsv/*.c -o dist/sqlean.so -lm
 
 pack-linux:
 	zip -j dist/sqlean-linux-x86.zip dist/*.so
@@ -77,7 +77,7 @@ compile-macos:
 	gcc -O3 $(MACOS_FLAGS) src/sqlite3-unicode.c src/unicode/*.c -o dist/unicode.dylib
 	gcc -O3 $(MACOS_FLAGS) src/sqlite3-uuid.c src/uuid/*.c -o dist/uuid.dylib
 	gcc -O3 $(MACOS_FLAGS) src/sqlite3-vsv.c src/vsv/*.c -o dist/vsv.dylib -lm
-	gcc -O1 $(MACOS_FLAGS) -include src/regexp/constants.h src/sqlite3-sqlean.c src/crypto/*.c src/define/*.c src/fileio/*.c src/fuzzy/*.c src/math/*.c src/regexp/*.c src/regexp/pcre2/*.c src/stats/*.c src/text/*.c src/unicode/*.c src/uuid/*.c src/vsv/*.c -o dist/sqlean.dylib -lm
+	gcc -O1 $(MACOS_FLAGS) -include src/regexp/constants.h src/sqlite3-sqlean.c src/crypto/*.c src/define/*.c src/fileio/*.c src/fuzzy/*.c src/ipaddr/*.c src/math/*.c src/regexp/*.c src/regexp/pcre2/*.c src/stats/*.c src/text/*.c src/unicode/*.c src/uuid/*.c src/vsv/*.c -o dist/sqlean.dylib -lm
 
 compile-macos-x86:
 	mkdir -p dist/x86
@@ -94,7 +94,7 @@ compile-macos-x86:
 	gcc -O3 $(MACOS_FLAGS) src/sqlite3-unicode.c src/unicode/*.c -o dist/x86/unicode.dylib -target x86_64-apple-macos10.12
 	gcc -O3 $(MACOS_FLAGS) src/sqlite3-uuid.c src/uuid/*.c -o dist/x86/uuid.dylib -target x86_64-apple-macos10.12
 	gcc -O3 $(MACOS_FLAGS) src/sqlite3-vsv.c src/vsv/*.c -o dist/x86/vsv.dylib -target x86_64-apple-macos10.12 -lm
-	gcc -O1 $(MACOS_FLAGS) -include src/regexp/constants.h src/sqlite3-sqlean.c src/crypto/*.c src/define/*.c src/fileio/*.c src/fuzzy/*.c src/math/*.c src/regexp/*.c src/regexp/pcre2/*.c src/stats/*.c src/text/*.c src/unicode/*.c src/uuid/*.c src/vsv/*.c -o dist/x86/sqlean.dylib -target x86_64-apple-macos10.12 -lm
+	gcc -O1 $(MACOS_FLAGS) -include src/regexp/constants.h src/sqlite3-sqlean.c src/crypto/*.c src/define/*.c src/fileio/*.c src/fuzzy/*.c src/ipaddr/*.c src/math/*.c src/regexp/*.c src/regexp/pcre2/*.c src/stats/*.c src/text/*.c src/unicode/*.c src/uuid/*.c src/vsv/*.c -o dist/x86/sqlean.dylib -target x86_64-apple-macos10.12 -lm
 
 compile-macos-arm64:
 	mkdir -p dist/arm64
@@ -111,7 +111,7 @@ compile-macos-arm64:
 	gcc -O3 $(MACOS_FLAGS) src/sqlite3-unicode.c src/unicode/*.c -o dist/arm64/unicode.dylib -target arm64-apple-macos11
 	gcc -O3 $(MACOS_FLAGS) src/sqlite3-uuid.c src/uuid/*.c -o dist/arm64/uuid.dylib -target arm64-apple-macos11
 	gcc -O3 $(MACOS_FLAGS) src/sqlite3-vsv.c src/vsv/*.c -o dist/arm64/vsv.dylib -target arm64-apple-macos11 -lm
-	gcc -O1 $(MACOS_FLAGS) -include src/regexp/constants.h src/sqlite3-sqlean.c src/crypto/*.c src/define/*.c src/fileio/*.c src/fuzzy/*.c src/math/*.c src/regexp/*.c src/regexp/pcre2/*.c src/stats/*.c src/text/*.c src/unicode/*.c src/uuid/*.c src/vsv/*.c -o dist/arm64/sqlean.dylib -target arm64-apple-macos11 -lm
+	gcc -O1 $(MACOS_FLAGS) -include src/regexp/constants.h src/sqlite3-sqlean.c src/crypto/*.c src/define/*.c src/fileio/*.c src/fuzzy/*.c src/ipaddr/*.c src/math/*.c src/regexp/*.c src/regexp/pcre2/*.c src/stats/*.c src/text/*.c src/unicode/*.c src/uuid/*.c src/vsv/*.c -o dist/arm64/sqlean.dylib -target arm64-apple-macos11 -lm
 
 pack-macos:
 	zip -j dist/sqlean-macos-x86.zip dist/x86/*.dylib
diff --git a/src/sqlite3-sqlean.c b/src/sqlite3-sqlean.c
index abc9ca0..5b5e834 100755
--- a/src/sqlite3-sqlean.c
+++ b/src/sqlite3-sqlean.c
@@ -12,6 +12,9 @@ SQLITE_EXTENSION_INIT1
 #include "define/extension.h"
 #include "fileio/extension.h"
 #include "fuzzy/extension.h"
+#if !defined(_WIN32)
+#include "ipaddr/extension.h"
+#endif
 #include "math/extension.h"
 #include "regexp/extension.h"
 #include "stats/extension.h"
@@ -39,6 +42,9 @@ __declspec(dllexport)
     define_init(db);
     fileio_init(db);
     fuzzy_init(db);
+#if !defined(_WIN32)
+    ipaddr_init(db);
+#endif
     math_init(db);
     regexp_init(db);
     stats_init(db);
diff --git a/test/sqlean.sql b/test/sqlean.sql
index 385ea86..4cb369e 100644
--- a/test/sqlean.sql
+++ b/test/sqlean.sql
@@ -22,6 +22,10 @@ select '3_02', fileio_mode(420) = '?rw-r--r--';
 select '4_01', dlevenshtein('abc', 'abcd') = 1;
 select '4_02', caverphone('awesome') = 'AWSM111111';
 
+-- ipaddr
+select '12_01', iphost('192.168.16.12/24') = '192.168.16.12';
+select '12_02', ipcontains('192.168.16.0/24', '192.168.16.3') = 1;
+
 -- math
 select '5_01', trunc(3.9) = 3;
 select '5_02', sqrt(100) = 10;