diff --git a/pythonwhois/parse.py b/pythonwhois/parse.py
index 66217d6..018fb61 100644
--- a/pythonwhois/parse.py
+++ b/pythonwhois/parse.py
@@ -222,6 +222,7 @@ def preprocess_regex(regex):
 	"Registrant:\n registrant_org: (?P<organization>.*)\n registrant_name: (?P<name>.*)\n registrant_email: (?P<email>.*)\n registrant_address: (?P<address>.*)\n registrant_city: (?P<city>.*)\n registrant_state: (?P<state>.*)\n registrant_zip: (?P<postalcode>.*)\n registrant_country: (?P<country>.*)\n registrant_phone: (?P<phone>.*)", # Bellnames
 	"Holder of domain name:\n(?P<name>[\S\s]+)\n(?P<street>.+)\n(?P<postalcode>[A-Z0-9-]+)\s+(?P<city>.+)\n(?P<country>.+)\nContractual Language", # nic.ch
 	"\n\n(?:Owner)?\s+: (?P<name>.*)\n(?:\s+: (?P<organization>.*)\n)?\s+: (?P<street>.*)\n\s+: (?P<city>.*)\n\s+: (?P<state>.*)\n\s+: (?P<country>.*)\n", # nic.io
+        "\n\n(?:Owner)?\s+: (?P<name>.*)\n(?:Owner)?(?:\s+: (?P<organization>.*)\n)(?:Owner)??\s+: (?P<street>.*)\n(?:Owner)?\s+: (?P<city>.*)\n(?:Owner)?\s+: (?P<state>.*)\n(?:Owner)?\s+: (?P<country>.*)\n", # nic.io format with multiple Owner:
 	"Contact Information:\n\[Name\]\s*(?P<name>.*)\n\[Email\]\s*(?P<email>.*)\n\[Web Page\]\s*(?P<url>.*)\n\[Postal code\]\s*(?P<postalcode>.*)\n\[Postal Address\]\s*(?P<street1>.*)\n(?:\s+(?P<street2>.*)\n)?(?:\s+(?P<street3>.*)\n)?\[Phone\]\s*(?P<phone>.*)\n\[Fax\]\s*(?P<fax>.*)\n", # jprs.jp
 	"g\. \[Organization\]               (?P<organization>.+)\n", # .co.jp registrations at jprs.jp
 	"Registrant ID:(?P<handle>.*)\nRegistrant Name:(?P<name>.*)\n(?:Registrant Organization:(?P<organization>.*)\n)?Registrant Address1:(?P<street1>.*)\n(?:Registrant Address2:(?P<street2>.*)\n)?(?:Registrant Address3:(?P<street3>.*)\n)?Registrant City:(?P<city>.*)\n(?:Registrant State/Province:(?P<state>.*)\n)?(?:Registrant Postal Code:(?P<postalcode>.*)\n)?Registrant Country:(?P<country>.*)\nRegistrant Country Code:.*\nRegistrant Phone Number:(?P<phone>.*)\n(?:Registrant Facsimile Number:(?P<facsimile>.*)\n)?Registrant Email:(?P<email>.*)", # .US, .biz (NeuStar), .buzz, .moe (Interlink Co. Ltd.)
diff --git a/test/data/github.io b/test/data/github.io
new file mode 100644
index 0000000..c699996
--- /dev/null
+++ b/test/data/github.io
@@ -0,0 +1,14 @@
+Status            : Client Updt Lock
+Expiration date   : 2016-03-08 00:00:00
+Name server       : ns1.p16.dynect.net
+Name server       : ns2.p16.dynect.net
+Name server       : ns3.p16.dynect.net
+Name server       : ns4.p16.dynect.net
+
+Registrant
+    Name              : Domain Administrator
+    Organization      : GitHub, Inc.
+    Street address    : 548 4th Street
+    City              : San Francisco
+    State / Province  : California
+    Country           : United States
diff --git a/test/target_default/github.io b/test/target_default/github.io
new file mode 100644
index 0000000..0497375
--- /dev/null
+++ b/test/target_default/github.io
@@ -0,0 +1 @@
+{"status": ["Client Updt Lock"], "expiration_date": ["2016-03-08T00:00:00"], "raw": ["Status            : Client Updt Lock\nExpiration date   : 2016-03-08 00:00:00\nName server       : ns1.p16.dynect.net\nName server       : ns2.p16.dynect.net\nName server       : ns3.p16.dynect.net\nName server       : ns4.p16.dynect.net\n\nRegistrant\n    Name              : Domain Administrator\n    Organization      : GitHub, Inc.\n    Street address    : 548 4th Street\n    City              : San Francisco\n    State / Province  : California\n    Country           : United States\n"], "contacts": {"admin": null, "tech": null, "registrant": null, "billing": null}}
\ No newline at end of file
diff --git a/test/target_normalized/github.io b/test/target_normalized/github.io
new file mode 100644
index 0000000..0497375
--- /dev/null
+++ b/test/target_normalized/github.io
@@ -0,0 +1 @@
+{"status": ["Client Updt Lock"], "expiration_date": ["2016-03-08T00:00:00"], "raw": ["Status            : Client Updt Lock\nExpiration date   : 2016-03-08 00:00:00\nName server       : ns1.p16.dynect.net\nName server       : ns2.p16.dynect.net\nName server       : ns3.p16.dynect.net\nName server       : ns4.p16.dynect.net\n\nRegistrant\n    Name              : Domain Administrator\n    Organization      : GitHub, Inc.\n    Street address    : 548 4th Street\n    City              : San Francisco\n    State / Province  : California\n    Country           : United States\n"], "contacts": {"admin": null, "tech": null, "registrant": null, "billing": null}}
\ No newline at end of file