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v3.21.1

General Information (Tables) | 12 Months Ended
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Dec. 31, 2020
Text block [abstract] |
Summary of Consolidated Subsidiaries | The consolidated subsidiaries as at December 31, 2019 and 2020, are as follows:
|  |  |  |  |  | Controlling percentage ownership 1 |  |
Subsidiary |  | Type of business |  | Location |  | December 31, 2019 |  | December 31, 2020 |  | Closing month
KT Powertel Co., Ltd. 2 |  | Trunk Radio System (TRS) business |  | Korea |  | 44.8% |  | 44.8% |  | December
KT Linkus Co., Ltd. |  | Public telephone maintenance |  | Korea |  | 92.4% |  | 92.4% |  | December
KT Submarine Co., Ltd. 2,4 |  | Submarine cable construction and maintenance |  | Korea |  | 39.3% |  | 39.3% |  | December
KT Telecop Co., Ltd. |  | Security service |  | Korea |  | 86.8% |  | 86.8% |  | December
KT Hitel Co., Ltd. |  | Data communication |  | Korea |  | 67.1% |  | 67.1% |  | December
KT Service Bukbu Co., Ltd. |  | Opening services of fixed line |  | Korea |  | 67.3% |  | 67.3% |  | December
KT Service Nambu Co., Ltd. |  | Opening services of fixed line |  | Korea |  | 77.3% |  | 77.3% |  | December
KT Commerce Inc. |  | B2C, B2B service |  | Korea |  | 100.0% |  | 100.0% |  | December
KT Strategic Investment Fund No.2 |  | Investment fund |  | Korea |  | 100.0% |  | 100.0% |  | December
KT Strategic Investment Fund No.3 |  | Investment fund |  | Korea |  | 100.0% |  | 100.0% |  | December
KT Strategic Investment Fund No.4 |  | Investment fund |  | Korea |  | 100.0% |  | 100.0% |  | December
KT Strategic Investment Fund No.5 |  | Investment fund |  | Korea |  | 100.0% |  | 100.0% |  | December
BC-VP Strategic Investment Fund No.1 |  | Investment fund |  | Korea |  | 100.0% |  | 100.0% |  | December
BC Card Co., Ltd. |  | Credit card business |  | Korea |  | 69.5% |  | 69.5% |  | December
VP Inc. |  | Payment security service for credit card, others |  | Korea |  | 50.9% |  | 50.9% |  | December
H&C Network |  | Call centre for financial sectors |  | Korea |  | 100.0% |  | 100.0% |  | December
BC Card China Co., Ltd. |  | Software development and data processing |  | China |  | 100.0% |  | 100.0% |  | December
INITECH Co., Ltd. 4 |  | Internet banking ASP and security solutions |  | Korea |  | 58.2% |  | 58.2% |  | December
Smartro Co., Ltd. |  | VAN (Value Added Network) business |  | Korea |  | 64.5% |  | 64.5% |  | December
KTDS Co., Ltd. 4 |  | System integration and maintenance |  | Korea |  | 95.5% |  | 95.5% |  | December
KT M Hows Co., Ltd. |  | Mobile marketing |  | Korea |  | 90.0% |  | 90.0% |  | December
KT M&S Co., Ltd. |  | PCS distribution |  | Korea |  | 100.0% |  | 100.0% |  | December
GENIE Music Corporation (KT Music Corporation) 2,4 |  | Online music production and distribution |  | Korea |  | 36.0% |  | 36.2% |  | December
KT MOS Bukbu Co., Ltd. 4 |  | Telecommunication facility maintenance |  | Korea |  | 100.0% |  | 100.0% |  | December
KT MOS Nambu Co., Ltd. 4 |  | Telecommunication facility maintenance |  | Korea |  | 98.4% |  | 98.4% |  | December
KT Skylife Co., Ltd. 4 |  | Satellite broadcasting business |  | Korea |  | 50.3% |  | 50.3% |  | December
Skylife TV Co., Ltd. |  | TV contents provider |  | Korea |  | 92.6% |  | 92.6% |  | December
KT Estate Inc. |  | Residential building development and supply |  | Korea |  | 100.0% |  | 100.0% |  | December
KT AMC Co., Ltd. |  | Asset management and consulting services |  | Korea |  | 100.0% |  | 100.0% |  | December
NEXR Co., Ltd. |  | Cloud system implementation |  | Korea |  | 100.0% |  | 100.0% |  | December
KTGDH Co., Ltd. (KTSB Data Service) |  | Data centre development and related service |  | Korea |  | 100.0% |  | 100.0% |  | December
KT Sat Co., Ltd. |  | Satellite communication business |  | Korea |  | 100.0% |  | 100.0% |  | December
Nasmedia Co., Ltd. 3,4 |  | Solution provider and IPTV advertisement sales business |  | Korea |  | 44.0% |  | 44.0% |  | December
KT Sports Co., Ltd. |  | Management of sports group |  | Korea |  | 100.0% |  | 100.0% |  | December
KT Music Contents Fund No.1 |  | Music contents investment business |  | Korea |  | 80.0% |  | 80.0% |  | December
KT Music Contents Fund No.2 |  | Music contents investment business |  | Korea |  | 100.0% |  | 100.0% |  | December
KT-Michigan Global Contents Fund |  | Content investment business |  | Korea |  | 88.6% |  | 88.6% |  | December
Autopion Co., Ltd. |  | Information and communication service |  | Korea |  | 100.0% |  | 100.0% |  | December
KTCS Corporation 2,4 |  | Database and online information provider |  | Korea |  | 30.9% |  | 31.9% |  | December
KTIS Corporation 2,4 |  | Database and online information provider |  | Korea |  | 30.1% |  | 30.8% |  | December
KT M Mobile Co., Ltd. |  | Special category telecommunications operator and sales of communication device |  | Korea |  | 100.0% |  | 100.0% |  | December
KT Investment Co., Ltd. |  | Technology business finance |  | Korea |  | 100.0% |  | 100.0% |  | December
Whowho&Company Co., Ltd. |  | Software development and supply |  | Korea |  | 100.0% |  | 100.0% |  | December
PlayD Co., Ltd. (N Search Marketing Co., Ltd.) |  | Advertising agency |  | Korea |  | 100.0% |  | 70.4% |  | December
Next Connect PFV |  | Residential building development and supply |  | Korea |  | 100.0% |  | 100.0% |  | December
KT Rwanda Networks Ltd. |  | Network installation and management |  | Rwanda |  | 51.0% |  | 51.0% |  | December
AOS Ltd. |  | System integration and maintenance |  | Rwanda |  | 51.0% |  | 51.0% |  | December
KT Belgium |  | Foreign investment business |  | Belgium |  | 100.0% |  | 100.0% |  | December
Korea Telecom Japan Co., Ltd. |  | Foreign telecommunication business |  | Japan |  | 100.0% |  | 100.0% |  | December
KBTO sp.z o.o. |  | Electronic communication business |  | Poland |  | 97.2% |  | 97.4% |  | December
Korea Telecom China Co., Ltd. |  | Foreign telecommunication business |  | China |  | 100.0% |  | 100.0% |  | December
KT Dutch B.V. |  | Super iMax and East Telecom management |  | Netherlands |  | 100.0% |  | 100.0% |  | December
East Telecom LLC |  | Fixed line telecommunication business |  | Uzbekistan |  | 91.0% |  | 91.6% |  | December
Korea Telecom America, Inc. |  | Foreign telecommunication business |  | USA |  | 100.0% |  | 100.0% |  | December
PT. BC Card Asia Pacific |  | Software development and supply |  | Indonesia |  | 99.9% |  | 99.9% |  | December
KT Hong Kong Telecommunications Co., Ltd. |  | Fixed line communication business |  | Hong Kong |  | 100.0% |  | 100.0% |  | December
Korea Telecom Singapore Pte. Ltd. |  | Foreign investment business |  | Singapore |  | 100.0% |  | 100.0% |  | December
Texnoprosistem LLC |  | Fixed line internet business |  | Uzbekistan |  | 100.0% |  | 100.0% |  | December
Nasmedia Thailand Co., Ltd. |  | Internet advertising solution provider |  | Thailand |  | 99.9% |  | 99.9% |  | December
KT Huimangjieum |  | Manufacturing |  | Korea |  | 100.0% |  | 100.0% |  | December
GE Premier 1st Corporate Restructuring Real Estate Investment Trust Co. |  | Residential building investment and rent |  | Korea |  | 63.5% |  | 68.1% |  | December
K-REALTY RENTAL HOUSING REIT 3 |  | Residential building |  | Korea |  | 100.0% |  | 88.6% |  | December
Storywiz Co., Ltd |  | Content and software development and supply |  | Korea |  | — |  | 100.0% |  | December
KT Engineering Co., Ltd. (KT ENGCORE Co., Ltd.) |  | Telecommunication facility construction and maintenance |  | Korea |  | — |  | 100.0% |  | December
1 | Sum of the ownership interests owned by the Controlling Company and subsidiaries.
2 | Although the Controlling Company owns less than 50% ownership in this entity, this entity is consolidated as the Controlling Company can exercise the majority voting rights in its decision-making process at all times considering the historical voting pattern at the shareholders’ meetings.
3 | Although the Controlling Company owns less than 50% ownership in this entity, this entity is consolidated as the Controlling Company holds the majority of voting right based on an agreement with other investors.
4 | The number of subsidiaries’ treasury stock is deducted from the total number of shares when calculating the controlling percentage ownership.
Changes in scope of consolidation in 2020 are as follows:
Changes |  | Location |  | Name of Subsidiary |  | Reason
Included |  | Korea |  | Storywiz Co., Ltd |  | Newly established
| Korea |  | KT Engineering Co., Ltd. (KT ENGCORE Co., Ltd.) |  | Transferred
Excluded |  | Uzbekistan |  | Super iMax LLC |  | Merged
| Indonesia |  | PT. KT Indonesia |  | Liquidated
| Belgium |  | KT ORS Belgium |  | Liquidated
Summarized information for consolidated subsidiaries as at and for the years ended December 31, 2018, 2019 and 2020, is as follows:
(In millions of Korean won) |  | 2018 |
|  | Total assets |  |  | Total liabilities |  |  | Operating revenue |  |  | Profit (loss) for the year |
KT Powertel Co., Ltd. |  | ￦ | 124,064 |  |  | ￦ | 28,217 |  |  | ￦ | 65,620 |  |  | ￦ | (5,545 | )
KT Linkus Co., Ltd. |  |  | 54,147 |  |  |  | 44,895 |  |  |  | 106,337 |  |  |  | 1,216 |
KT Submarine Co., Ltd. |  |  | 130,715 |  |  |  | 27,530 |  |  |  | 61,652 |  |  |  | (4,286 | )
KT Telecop Co., Ltd. |  |  | 272,492 |  |  |  | 140,314 |  |  |  | 328,262 |  |  |  | 166 |
KT Hitel Co., Ltd. |  |  | 272,708 |  |  |  | 66,043 |  |  |  | 279,117 |  |  |  | 657 |
KT Service Bukbu Co., Ltd. |  |  | 30,599 |  |  |  | 23,964 |  |  |  | 195,961 |  |  |  | (31 | )
KT Service Nambu Co., Ltd. |  |  | 37,452 |  |  |  | 27,939 |  |  |  | 230,088 |  |  |  | 160 |
BC Card Co., Ltd. 1 |  |  | 3,722,379 |  |  |  | 2,630,536 |  |  |  | 3,551,715 |  |  |  | 70,889 |
H&C Network 1 |  |  | 245,841 |  |  |  | 63,188 |  |  |  | 297,470 |  |  |  | (15,944 | )
Nasmedia Co., Ltd. 1 |  |  | 303,112 |  |  |  | 161,164 |  |  |  | 106,805 |  |  |  | 20,596 |
KTDS Co., Ltd. 1 |  |  | 148,675 |  |  |  | 95,834 |  |  |  | 434,302 |  |  |  | 8,586 |
KT M Hows Co., Ltd. |  |  | 60,197 |  |  |  | 42,386 |  |  |  | 26,673 |  |  |  | 3,691 |
KT M&S Co., Ltd. |  |  | 228,073 |  |  |  | 207,740 |  |  |  | 791,652 |  |  |  | 11,408 |
GENIE Music Corporation (KT Music Corporation) |  |  | 221,559 |  |  |  | 75,827 |  |  |  | 171,314 |  |  |  | 6,374 |
KT MOS Bukbu Co., Ltd. |  |  | 14,121 |  |  |  | 10,571 |  |  |  | 16,543 |  |  |  | (782 | )
KT MOS Nambu Co., Ltd. |  |  | 14,313 |  |  |  | 8,927 |  |  |  | 14,941 |  |  |  | (2,418 | )
KT Skylife Co., Ltd. 1 |  |  | 816,001 |  |  |  | 149,841 |  |  |  | 694,059 |  |  |  | 52,010 |
KT Estate Inc. 1 |  |  | 1,695,995 |  |  |  | 304,712 |  |  |  | 569,269 |  |  |  | 51,854 |
KTGDH Co., Ltd. (KTSB Data service) |  |  | 8,632 |  |  |  | 523 |  |  |  | 4,627 |  |  |  | (9,576 | )
KT Sat Co., Ltd. |  |  | 685,926 |  |  |  | 173,513 |  |  |  | 137,186 |  |  |  | 4,921 |
KT Sports Co., Ltd. |  |  | 9,560 |  |  |  | 6,376 |  |  |  | 55,565 |  |  |  | (154 | )
KT Music Contents Fund No.1 |  |  | 14,092 |  |  |  | 1,035 |  |  |  | 559 |  |  |  | 294 |
KT Music Contents Fund No.2 |  |  | 7,629 |  |  |  | 281 |  |  |  | 150 |  |  |  | (142 | )
KT-Michigan Global Content Fund |  |  | 12,741 |  |  |  | — |  |  |  | 869 |  |  |  | (670 | )
Autopion Co., Ltd. |  |  | 8,838 |  |  |  | 5,801 |  |  |  | 12,035 |  |  |  | 453 |
KT M mobile Co., Ltd. |  |  | 146,334 |  |  |  | 35,335 |  |  |  | 172,674 |  |  |  | (10,085 | )
KT Investment Co., Ltd. 1 |  |  | 74,580 |  |  |  | 58,040 |  |  |  | 8,095 |  |  |  | 247 |
KTCS Corporation 1 |  |  | 350,280 |  |  |  | 188,561 |  |  |  | 1,019,787 |  |  |  | 11,401 |
KTIS Corporation |  |  | 229,246 |  |  |  | 68,997 |  |  |  | 451,532 |  |  |  | 7,900 |
Next connect PFV |  |  | 385,769 |  |  |  | 34,370 |  |  |  | 143 |  |  |  | (12,449 | )
Korea Telecom Japan Co., Ltd. 1 |  |  | 1,326 |  |  |  | 2,910 |  |  |  | 1,965 |  |  |  | (126 | )
Korea Telecom China Co., Ltd. |  |  | 661 |  |  |  | 22 |  |  |  | 681 |  |  |  | 10 |
KT Dutch B.V. |  |  | 31,693 |  |  |  | 41 |  |  |  | 191 |  |  |  | 105 |
Super iMax LLC |  |  | 4,150 |  |  |  | 4,528 |  |  |  | 4,845 |  |  |  | (424 | )
East Telecom LLC 1 |  |  | 16,590 |  |  |  | 14,263 |  |  |  | 15,087 |  |  |  | 2,639 |
Korea Telecom America, Inc. |  |  | 4,218 |  |  |  | 832 |  |  |  | 7,554 |  |  |  | 350 |
PT. KT Indonesia |  |  | 8 |  |  |  | — |  |  |  | — |  |  |  | — |
KT Rwanda Networks Ltd. 2 |  |  | 144,129 |  |  |  | 162,801 |  |  |  | 15,150 |  |  |  | (29,238 | )
KT Belgium |  |  | 90,172 |  |  |  | 1 |  |  |  | 29 |  |  |  | (43 | )
KT ORS Belgium |  |  | 6,709 |  |  |  | 5 |  |  |  | — |  |  |  | (46 | )
KBTO sp.zo.o. |  |  | 1,364 |  |  |  | 217 |  |  |  | 202 |  |  |  | (3,771 | )
AOS Ltd. 2 |  |  | 14,018 |  |  |  | 4,952 |  |  |  | 6,300 |  |  |  | (680 | )
KT Hongkong Telecommunications Co., Ltd. |  |  | 3,616 |  |  |  | 2,143 |  |  |  | 9,990 |  |  |  | 351 |
1 | These companies are the intermediate controlling companies of other subsidiaries and the above financial information is from their consolidated financial statements.
2 | At the end of the reporting period, convertible preferred stock issued by subsidiaries is included in liabilities.
(In millions of Korean won) |  | 2019 |
|  | Total assets |  |  | Total liabilities |  |  | Operating revenue |  |  | Profit (loss) for the year |
KT Powertel Co., Ltd. |  | ￦ | 118,052 |  |  | ￦ | 19,766 |  |  | ￦ | 62,846 |  |  | ￦ | 3,085 |
KT Linkus Co., Ltd. |  |  | 70,494 |  |  |  | 62,088 |  |  |  | 97,892 |  |  |  | (2,258 | )
KT Submarine Co., Ltd. |  |  | 120,947 |  |  |  | 18,452 |  |  |  | 55,244 |  |  |  | 486 |
KT Telecop Co., Ltd. |  |  | 279,878 |  |  |  | 153,841 |  |  |  | 332,063 |  |  |  | (4,875 | )
KT Hitel Co., Ltd. |  |  | 279,818 |  |  |  | 74,769 |  |  |  | 323,065 |  |  |  | 1,426 |
KT Service Bukbu Co., Ltd. |  |  | 64,802 |  |  |  | 58,984 |  |  |  | 219,427 |  |  |  | (445 | )
KT Service Nambu Co., Ltd. |  |  | 63,917 |  |  |  | 55,548 |  |  |  | 266,148 |  |  |  | 280 |
BC Card Co., Ltd. 1 |  |  | 3,912,982 |  |  |  | 2,594,232 |  |  |  | 3,553,008 |  |  |  | 115,885 |
H&C Network 1 |  |  | 282,016 |  |  |  | 68,401 |  |  |  | 320,701 |  |  |  | (1,593 | )
Nasmedia Co., Ltd. 1 |  |  | 356,236 |  |  |  | 203,105 |  |  |  | 117,550 |  |  |  | 22,484 |
KTDS Co., Ltd. 1 |  |  | 158,153 |  |  |  | 105,462 |  |  |  | 428,758 |  |  |  | 9,027 |
KT M Hows Co., Ltd. |  |  | 74,326 |  |  |  | 50,638 |  |  |  | 33,443 |  |  |  | 6,771 |
KT M&S Co., Ltd. |  |  | 248,142 |  |  |  | 215,777 |  |  |  | 813,498 |  |  |  | 12,732 |
GENIE Music Corporation (KT Music Corporation) |  |  | 234,131 |  |  |  | 80,952 |  |  |  | 230,480 |  |  |  | 7,658 |
KT MOS Bukbu Co., Ltd. |  |  | 33,376 |  |  |  | 28,841 |  |  |  | 63,761 |  |  |  | 353 |
KT MOS Nambu Co., Ltd. |  |  | 34,258 |  |  |  | 26,722 |  |  |  | 67,300 |  |  |  | 3,099 |
KT Skylife Co., Ltd. 1 |  |  | 848,276 |  |  |  | 142,839 |  |  |  | 704,996 |  |  |  | 56,008 |
KT Estate Inc. 1 |  |  | 1,686,000 |  |  |  | 295,706 |  |  |  | 485,686 |  |  |  | 48,552 |
KTGDH Co., Ltd. (KTSB Data service) |  |  | 10,437 |  |  |  | 1,628 |  |  |  | 3,977 |  |  |  | 344 |
KT Sat Co., Ltd. |  |  | 651,195 |  |  |  | 127,523 |  |  |  | 168,376 |  |  |  | 16,497 |
KT Sports Co., Ltd. |  |  | 15,603 |  |  |  | 8,333 |  |  |  | 55,241 |  |  |  | (464 | )
KT Music Contents Fund No.1 |  |  | 10,579 |  |  |  | 1,677 |  |  |  | 521 |  |  |  | 345 |
KT Music Contents Fund No.2 |  |  | 7,675 |  |  |  | 279 |  |  |  | 331 |  |  |  | 48 |
KT-Michigan Global Content Fund |  |  | 11,688 |  |  |  | 61 |  |  |  | 248 |  |  |  | (1,113 | )
Autopion Co., Ltd. |  |  | 7,460 |  |  |  | 4,894 |  |  |  | 5,604 |  |  |  | (302 | )
KT M mobile Co., Ltd. |  |  | 135,917 |  |  |  | 30,603 |  |  |  | 161,720 |  |  |  | (5,580 | )
KT Investment Co., Ltd. 1 |  |  | 73,463 |  |  |  | 56,212 |  |  |  | 13,375 |  |  |  | 847 |
KTCS Corporation 1 |  |  | 378,171 |  |  |  | 213,983 |  |  |  | 944,778 |  |  |  | 7,597 |
KTIS Corporation |  |  | 305,798 |  |  |  | 137,524 |  |  |  | 454,561 |  |  |  | 9,205 |
Next connect PFV |  |  | 385,412 |  |  |  | 24,275 |  |  |  | 1,590 |  |  |  | (5,898 | )
Korea Telecom Japan Co., Ltd. 1 |  |  | 1,851 |  |  |  | 2,858 |  |  |  | 2,891 |  |  |  | 651 |
Korea Telecom China Co., Ltd. |  |  | 879 |  |  |  | 39 |  |  |  | 844 |  |  |  | 192 |
KT Dutch B.V. |  |  | 31,003 |  |  |  | 50 |  |  |  | — |  |  |  | (242 | )
Super iMax LLC |  |  | 3,568 |  |  |  | 5,304 |  |  |  | 4,604 |  |  |  | (631 | )
East Telecom LLC 1 |  |  | 20,857 |  |  |  | 16,302 |  |  |  | 17,186 |  |  |  | 2,140 |
Korea Telecom America, Inc. |  |  | 4,611 |  |  |  | 537 |  |  |  | 6,808 |  |  |  | 572 |
PT. KT Indonesia |  |  | 8 |  |  |  | — |  |  |  | — |  |  |  | — |
KT Rwanda Networks Ltd. 2 |  |  | 132,461 |  |  |  | 183,164 |  |  |  | 18,013 |  |  |  | (31,662 | )
KT Belgium |  |  | 93,321 |  |  |  | 11 |  |  |  | — |  |  |  | (64 | )
KT ORS Belgium |  |  | 6,913 |  |  |  | 14 |  |  |  | — |  |  |  | (43 | )
KBTO sp.zo.o. |  |  | 1,767 |  |  |  | 245 |  |  |  | 519 |  |  |  | (3,457 | )
AOS Ltd. 2 |  |  | 12,337 |  |  |  | 3,993 |  |  |  | 6,982 |  |  |  | (591 | )
KT Hongkong Telecommunications Co., Ltd. |  |  | 5,126 |  |  |  | 2,923 |  |  |  | 13,321 |  |  |  | 586 |
KT Huimangjieum |  |  | 2,129 |  |  |  | 1,019 |  |  |  | 1,027 |  |  |  | (390 | )
GE Premier 1st Corporate Restructuring Real Estate Investment Trust Co. |  |  | 6,285 |  |  |  | 1,139 |  |  |  | 176 |  |  |  | 70 |
K-REALTY RENTAL HOUSING REIT 3 |  |  | 300 |  |  |  | — |  |  |  | — |  |  |  | — |
1 | These companies are the intermediate controlling companies of other subsidiaries and the above financial information is from their consolidated financial statements.
2 | At the end of the reporting period, convertible preferred stock issued by subsidiaries is included in liabilities.
( I n millions of Korean won) |  | 2020 |
|  | Total assets |  |  | Total liabilities |  |  | Operating revenues |  |  | Profit (loss) for the year |
KT Powertel Co., Ltd. |  | ￦ | 119,694 |  |  | ￦ | 18,833 |  |  | ￦ | 65,897 |  |  | ￦ | 3,809 |
KT Linkus Co., Ltd. |  |  | 58,372 |  |  |  | 54,022 |  |  |  | 84,519 |  |  |  | (3,212 | )
KT Submarine Co., Ltd. |  |  | 116,813 |  |  |  | 14,032 |  |  |  | 110,201 |  |  |  | 1,197 |
KT Telecop Co., Ltd. |  |  | 318,456 |  |  |  | 193,737 |  |  |  | 392,489 |  |  |  | 212 |
KT Hitel Co., Ltd. |  |  | 288,949 |  |  |  | 92,599 |  |  |  | 350,231 |  |  |  | 2,080 |
KT Service Bukbu Co., Ltd. |  |  | 60,825 |  |  |  | 56,554 |  |  |  | 217,451 |  |  |  | (871 | )
KT Service Nambu Co., Ltd. |  |  | 58,182 |  |  |  | 51,460 |  |  |  | 264,776 |  |  |  | (456 | )
BC Card Co., Ltd. 1 |  |  | 3,084,398 |  |  |  | 1,778,751 |  |  |  | 3,387,640 |  |  |  | 39,455 |
H&C Network 1 |  |  | 269,651 |  |  |  | 61,365 |  |  |  | 322,690 |  |  |  | 2,413 |
Nasmedia Co., Ltd. 1 |  |  | 422,039 |  |  |  | 221,371 |  |  |  | 113,136 |  |  |  | 23,134 |
KTDS Co., Ltd. 1 |  |  | 183,297 |  |  |  | 133,129 |  |  |  | 499,990 |  |  |  | 10,635 |
KT M Hows Co., Ltd. |  |  | 104,704 |  |  |  | 76,315 |  |  |  | 44,860 |  |  |  | 6,935 |
KT M&S Co., Ltd. |  |  | 231,260 |  |  |  | 197,306 |  |  |  | 661,533 |  |  |  | (485 | )
GENIE Music Corporation (KT Music Corporation) |  |  | 250,538 |  |  |  | 88,488 |  |  |  | 247,237 |  |  |  | 9,472 |
KT MOS Bukbu Co., Ltd. |  |  | 32,167 |  |  |  | 26,070 |  |  |  | 67,975 |  |  |  | 1,473 |
KT MOS Nambu Co., Ltd. |  |  | 33,765 |  |  |  | 24,947 |  |  |  | 71,259 |  |  |  | 1,639 |
KT Skylife Co., Ltd. 1 |  |  | 919,476 |  |  |  | 175,039 |  |  |  | 706,631 |  |  |  | 58,190 |
KT Estate Inc. 1 |  |  | 1,689,601 |  |  |  | 325,429 |  |  |  | 365,335 |  |  |  | 14,370 |
KTGDH Co., Ltd. (KTSB Data Service) |  |  | 11,003 |  |  |  | 1,669 |  |  |  | 4,282 |  |  |  | 538 |
KT Sat Co., Ltd. |  |  | 630,740 |  |  |  | 92,791 |  |  |  | 173,693 |  |  |  | 14,753 |
KT Sports Co., Ltd. |  |  | 26,572 |  |  |  | 14,940 |  |  |  | 46,608 |  |  |  | (2,516 | )
KT Music Contents Fund No.1 |  |  | 4,844 |  |  |  | 1,525 |  |  |  | 243 |  |  |  | 84 |
KT Music Contents Fund No.2 |  |  | 15,021 |  |  |  | 285 |  |  |  | 169 |  |  |  | (116 | )
KT-Michigan Global Contents Fund |  |  | 10,382 |  |  |  | 175 |  |  |  | 111 |  |  |  | (1,420 | )
Autopion Co., Ltd. |  |  | 4,903 |  |  |  | 4,961 |  |  |  | 6,174 |  |  |  | (2,459 | )
KT M Mobile Co., Ltd. |  |  | 129,011 |  |  |  | 27,281 |  |  |  | 163,472 |  |  |  | (3,617 | )
KT Investment Co., Ltd. 1 |  |  | 115,627 |  |  |  | 93,695 |  |  |  | 47,801 |  |  |  | 4,680 |
KTCS Corporation 1 |  |  | 384,919 |  |  |  | 215,175 |  |  |  | 933,006 |  |  |  | 11,323 |
KTIS Corporation |  |  | 294,289 |  |  |  | 126,894 |  |  |  | 454,172 |  |  |  | 7,387 |
Next Connect PFV |  |  | 394,268 |  |  |  | 37,271 |  |  |  | 26 |  |  |  | (7,101 | )
Korea Telecom Japan Co., Ltd. 1 |  |  | 2,694 |  |  |  | 2,622 |  |  |  | 1,853 |  |  |  | 1 |
Korea Telecom China Co., Ltd. |  |  | 381 |  |  |  | 21 |  |  |  | 618 |  |  |  | (492 | )
KT Dutch B.V. 1 |  |  | 29,585 |  |  |  | 10,109 |  |  |  | 26,782 |  |  |  | 6,061 |
Korea Telecom America, Inc. |  |  | 4,498 |  |  |  | 125 |  |  |  | 6,808 |  |  |  | 712 |
KT Rwanda Networks Ltd. 2 |  |  | 114,768 |  |  |  | 191,781 |  |  |  | 17,870 |  |  |  | (34,610 | )
KT Belgium |  |  | 87,608 |  |  |  | — |  |  |  | (81 | ) |  |  | (81 | )
KBTO sp.z o.o. |  |  | 438 |  |  |  | 117 |  |  |  | 490 |  |  |  | (2,823 | )
AOS Ltd. 2 |  |  | 11,812 |  |  |  | 3,875 |  |  |  | 5,719 |  |  |  | 296 |
KT Hong Kong Telecommunications Co., Ltd. |  |  | 6,159 |  |  |  | 2,800 |  |  |  | 16,386 |  |  |  | 1,308 |
KT Huimangjieum |  |  | 3,720 |  |  |  | 2,787 |  |  |  | 5,239 |  |  |  | (13 | )
GE Premier 1st Corporate Restructuring Real Estate Investment Trust Co. |  |  | 5,703 |  |  |  | 1,165 |  |  |  | 333 |  |  |  | 83 |
Storywiz Co., Ltd |  |  | 21,594 |  |  |  | 10,065 |  |  |  | 19,209 |  |  |  | (1,954 | )
KT Engineering Co., Ltd. (KT ENGCORE Co., Ltd.) |  |  | 138,220 |  |  |  | 102,963 |  |  |  | 346,040 |  |  |  | (8,461 | )
1 | These companies are the intermediate controlling companies of other subsidiaries and the above financial information is from their consolidated financial statements.
2 | At the end of the reporting period, convertible preferred stock issued by subsidiaries is included in liabilities.

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- Definition The disclosure of subsidiaries. [Refer: Subsidiaries [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 27 -IssueDate 2020-01-01 -Paragraph 17 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=27&code=ifrs-tx-2020-en-r&anchor=para_17_b&doctype=Standard -URIDate 2020-01-01 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 27 -IssueDate 2020-01-01 -Paragraph 16 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=27&code=ifrs-tx-2020-en-r&anchor=para_16_b&doctype=Standard -URIDate 2020-01-01 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2020-01-01 -Paragraph B4 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2020-en-r&anchor=para_B4_a&doctype=Appendix&subtype=B -URIDate 2020-01-01 + Details
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