1 files changed, 3 insertions, 0 deletions
diff --git a/whois.go b/whois.go
index 7e0a50e..bd4377e 100644
--- a/whois.go
+++ b/whois.go
@@ -59,6 +59,9 @@ func findIPBlock(domains ...string) (pairs map[string]string, err error) {
 	pairs = make(map[string]string, len(lines)-2)
 	for _, line := range lines[1 : len(lines)-1] {
 		content := strings.Split(line, "|")
+		if len(content) < 3 {
+			continue
+		}
 		ipaddr := strings.TrimSpace(content[1])
 		ipb := strings.TrimSpace(content[2])
 		pairs[ipaddr] = ipb