- (Hà Nội) IPA (key): /ˀɗɐŋ˧˧ ki˧ˀ˦/
- (Huế) IPA (key): /ˀɗɐŋ˧˧ kɪj˩ˀ˧/
- (Hồ Chí Minh City) IPA (key): /ˀɗɐŋ˧˥ kɪj˦ˀ˥/
The word đăng ký has negative connotations among Overseas Vietnamese communities, as the word is associated with reeducation camp forced registration drives following the Vietnam War. An alternative is ghi danh.