Introduction

ASTRO official Twitter: https://twitter.com/offclASTRO
ASTRO Japan official Twitter: https://twitter.com/jp_offclastro
ASTRO official Facebook: https://www.facebook.com/offclASTRO
ASTRO official Youtube: https://www.youtube.com/channel/UCZqY2yIsAM9wh3vvMwKd27g
ASTRO official fancafe: http://cafe.daum.net/fantagio-boys
ASTRO Japan official fansite: http://www.officialastro.jp/
ASTRO official Weibo: http://www.weibo.com/officialASTRO
ASTRO official Instagram: https://www.instagram.com/officialastro/
ASTRO Vapp Channel: http://channels.vlive.tv/F6F107

ASTRO KakaoTalk: 아스트로

Fantagio Group Twitter: ttps://twitter.com/fantagiogroup
Fantagio Staff Twitter: https://twitter.com/fantagiostaff
Fantagio official Weibo: http://www.weibo.com/fantagio
Fantagio Youtube: https://www.youtube.com/user/fantagiomusic
Fantagio tvcast: http://tvcast.naver.com/fantagiomusic
Fantagio official Instagram: https://www.instagram.com/fantagio_official/

To Be Continued tvcast: http://tvcast.naver.com/tobecontinued
To Be Continued Weibo: http://www.weibo.com/fantagioiteen
i-Teen Twitter: https://twitter.com/fantagio_iTeen
i-Teen Facebook: https://www.facebook.com/fantagioiteen
i-Teen Youtube: https://www.youtube.com/user/fantagioiteen
OK! Ready tvcast: http://tvcast.naver.com/astro


Picture source:
http://cafe.daum.net/fantagio-boys
https://twitter.com/fantagiomusic