diff --git a/ext/filter/logical_filters.c b/ext/filter/logical_filters.c
index 75550238e1bdc..0b6354e815a1a 100644
--- a/ext/filter/logical_filters.c
+++ b/ext/filter/logical_filters.c
@@ -789,10 +789,10 @@ void php_filter_validate_ip(PHP_INPUT_FILTER_PARAM_DECL) /* {{{ */
 			if (flags & FILTER_FLAG_NO_RES_RANGE) {
 				if (
 					(ip[0] == 0) ||
+					(ip[0] == 127) ||
 					(ip[0] == 100 && (ip[1] >= 64 && ip[1] <= 127)) ||
 					(ip[0] == 169 && ip[1] == 254) ||
 					(ip[0] == 192 && ip[1] == 0 && ip[2] == 2) ||
-					(ip[0] == 127 && ip[1] == 0 && ip[2] == 0 && ip[3] == 1) ||
 					(ip[0] >= 224 && ip[0] <= 255)
 				) {
 					RETURN_VALIDATION_FAILED
diff --git a/ext/filter/tests/bug71745.phpt b/ext/filter/tests/bug71745.phpt
new file mode 100644
index 0000000000000..35866c55a5f54
--- /dev/null
+++ b/ext/filter/tests/bug71745.phpt
@@ -0,0 +1,15 @@
+--TEST--
+Bug #71745 (FILTER_FLAG_NO_RES_RANGE does not cover whole 127.0.0.0/8 range)
+--SKIPIF--
+<?php if (!extension_loaded("filter")) die("skip"); ?>
+--FILE--
+<?php
+foreach (['127.0.0.1', '127.0.0.2', '127.0.1.1', '127.127.127.127'] as $ip) {
+    var_dump(filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4 | FILTER_FLAG_NO_RES_RANGE));
+}
+?>
+--EXPECT--
+bool(false)
+bool(false)
+bool(false)
+bool(false)