| Reference | IOTA | Oblast | Prefix | Island Names |
BALTIC SEA GROUP
| RR-01-01 | EU-117 | R1MV | Malyy Vsotskiy Island | |
| RR-01-02 | EU-133 | LO | R1C | Bolshoy Berezovyy Island (Incl. Severnyy berezovyy, Zapadnyy berezovyy) |
| RR-01-03 | EU-133 | LO | R1C | Moshcnyy Island (Incl. Malyy, Seskar, Tyuters) |
| RR-01-04 | EU-133 | LO | R1C | Gogland Island |
| RR-01-05 | EU-133 | LO | R1C | Rodsher Island |
| RR-01-06 | EU-133 | SP | R1A | Kotlin Island |
| RR-01-07 | KA | R2F | Kaliningrad oblast Islands |
WHITE SEA GROUP
| RR-02-01 | EU-147 | KL | R1N | Myagostrov Island |
| RR-02-02 | EU-147 | KL | R1N | Zhuzhmuy Island (Incl. Bolshoy zhuzhmuy, Malyy zhuzhmuy) |
| RR-02-03 | KL | R1N | Ivanovy ludy Islands | |
| RR-02-04 | EU-066 | AR | R1O | Solovetskiye Islands |
| RR-02-05 | EU-153 | AR | R1O | Mudyugskiy Islands |
| RR-02-06 | EU-153 | AR | R1O | Lyasomin Island (Incl. Zhizhgin) |
| RR-02-07 | EU-162 | MU | R1Z | Velikiy Island (Incl. Oleniy) |
| RR-02-08 | EU-119 | MU | R1Z | Morzhovets Island |
BARENTS SEA GROUP
| RR-03-01 | EU-161 | MU | R1Z | Lumbovskiy Island |
| RR-03-02 | EU-161 | MU | R1Z | Kharlov Island |
| RR-03-03 | EU-082 | MU | R1Z | Kildin Island |
| RR-03-04 | EU-160 | NO | R1P | Kambalnitskiye koshki Islands (Incl. Korga) |
| RR-03-05 | EU-085 | NO | R1P | Kolguev Island |
| RR-03-06 | EU-085 | NO | R1P | Senegeyskiy Island |
| RR-03-07 | EU-085 | NO | R1P | Dolgiy Island (Incl. Matveev, Bolshoy Zelenets) |
| RR-03-08 | EU-085 | NO | R1P | Gulyaevskiye koshki Islands |
NOVAYA ZEMLYA
| RR-04-01 | EU-035 | AR | R1O | Novaya Zemlya (Incl. Pankratyeva, Mezhdusharskyy, Gorbovoy, Kusova zemlya, Tsivolko, Oranskiye, Barentsa,Pakhtusova,...) |
KARA SEA GROUP
| RR-06-01 | EU-086 | NO | R1P | Vaygach Island (Incl. Mestnyy ) |
| RR-06-02 | AS-089 | JN | R9K | Marresalskiye koshki Islands |
| RR-06-03 | AS-089 | JN | R9K | Sharapovy koshki Islands |
| RR-06-04 | AS-089 | JN | R9K | Belyy Island |
| RR-06-05 | AS-089 | JN | R9K | Shokalskogo Island (Incl. Khalyango) |
| RR-06-06 | AS-089 | JN | R9K | Oleniy Island |
| RR-06-07 | AS-005 | TM | R0B | Vilkitskogo Island (Incl. Neupokoeva) |
| RR-06-08 | TM | R0B | Sibiryakova Island (Incl. Nosok) | |
| RR-06-09 | AS-005 | TM | R0B | Dickson Island (Incl. Olenii Islands) |
| RR-06-10 | AS-005 | TM | R0B | Yenisei gulf Islands |
| RR-06-11 | AS-068 | TM | R0B | Zapadnyy kamennyy Island (Incl. Rastorgueva, Vostochnyy kamennyy, Morzhova) |
| RR-06-12 | AS-068 | TM | R0B | Plavnikovyye Islands (Incl. Podkova, Kruglyy, Peskovyy, Zveroboy,...) |
| RR-06-13 | AS-121 | TM | R0B | Kolosovykh Island (Incl. Scott-Gansen Isls, Mona Isls, Tillo Isls, Ringnes Isls, Rykacheva,...) |
| RR-06-14 | AS-005 | TM | R0B | Sverdrup Island |
| RR-06-15 | AS-087 | TM | R0B | Arkticheskogo Instituta Islands (Incl. Bolshoy, Sidorova,...) |
| RR-06-16 | AS-086 | TM | R0B | Izvestiy TS. I. K. Islands (Incl. Troynoy, Pologiy, Sergeeva,...) |
| RR-06-17 | AS-057 | TM | R0B | Uedineniya Island |
| RR-06-18 | AS-050 | TM | R0B | Sergeya kirova Islands (Incl. Kirova, Isachenko, Slozhnyy,...) |
| RR-06-19 | TM | R0B | Nordenshelda Archipelago (Incl. Russkiy, Makarova, Krasin, Petersen, Bianki, Tyrtova, Nord,...) | |
| RR-06-20 | AS-055 | TM | R0B | Vize island |
| RR-06-21 | TM | R0B | Ushakova island | |
| RR-06-22 | AS-054 | TM | R0B | Gejberga Island |
| RR-06-23 | AS-104 | TM | R0B | Prodolgovatyy Islands (Incl. Taymyr, Nansena Isls) |
| RR-06-24 | AS-109 | JN | R9K | Obskaya Gulf Islands (Incl. Narechi, Ermak,...) |
NORTH LAND (SEVERNAYA ZEMLYA)
| RR-07-01 | AS-042 | TM | R0B | Severnaya zemlya Islands (Incl. Schmidta, Pioner, Komsomolets,...) |
| RR-07-02 | AS-042 | TM | R0B | Oktyabrskoy revolyutsii Island (Incl. Sredniy,...) |
| RR-07-03 | AS-042 | TM | R0B | Bolshevik Island |
LAPTEV SEA GROUP
| RR-08-01 | TM | R0B | Malyy taymir Island (Incl. Starokadomskogo) | |
| RR-08-02 | AS-054 | TM | R0B | Komsomolskoy pravdy Islands (Incl. Bolshoy,...) |
| RR-08-03 | AS-063 | TM | R0B | Petra islands (Incl. Severnyy) |
| RR-08-04 | YA | R0Q | Bolshoy begichev Island (Incl. Malyy begichev, Preobrazheniya, Peschanyy,...) | |
| RR-08-05 | AS-082 | YA | R0Q | Aeros'yemki Islands (Incl. Samoleta) |
| RR-08-06 | YA | R0Q | Dyandylakh Island (Incl. Salkay) | |
| RR-08-07 | AS-082 | YA | R0Q | Dunay Islands (Incl. Cuba-aryta, America-cuba-Aryta) |
| RR-08-08 | AS-082 | YA | R0Q | Muostakh Island |
| RR-08-09 | YA | R0Q | Shelonskiye Islands (Incl. Yarok, Makar) |
NEW SIBERIAN ISLANDS
| RR-09-01 | AS-029 | YA | R0Q | Lyakhovskiye Islands (Incl. Bolshoy lyakhovskiy, Malyy lyakhovskiy, Stolbovoy) |
| RR-09-02 | AS-029 | YA | R0Q | Anzhu Islands (Incl. Belkovskiy, Fadeevskyy, Novaya, Sibir, Kotelnyy, Nanosnyy, Strzheva, Neizvestnyye,...) |
| RR-09-03 | AS-048 | YA | R0Q | De longa Islands (Incl. Vilkitskogo, Zhokhova, Genriyetty, Zhannetty, Bennetta) |
EAST SIBERIAN SEA GROUP
| RR-10-01 | YA | R0Q | Kolesovskiye Islands (Incl. Krestovyy) | |
| RR-10-02 | AS-022 | YA | R0Q | Medvezhii (Bear) Islands (Incl. Krestovskiy, Pushkareva, Leontyeva, Chetyrekhstolbovoy) |
| RR-10-03 | AS-070 | YA | R0Q | G.U.S.M.P. Island (Incl. Sukharnyy) |
| RR-10-04 | AS-038 | CK | R0K | Ayon Island (Incl. Ryyanranot) |
| RR-10-05 | AS-038 | CK | R0K | Shalaurova Island |
| RR-10-06 | AS-027 | CK | R0K | Wrangel Island |
| RR-10-07 | AS-038 | CK | R0K | Routan Islands |
CHUKCHI SEA GROUP
| RR-11-01 | AS-027 | CK | R0K | Gerald Island |
| RR-11-02 | AS-065 | CK | R0K | Serykh Gusey Islands (Incl. Kolyuchin) |
| RR-11-03 | AS-065 | CK | R0K | Karkarpko Island |
| RR-11-04 | AS-061 | CK | R0K | Ratmanova Island |
| RR-11-05 | CK | R0K | Tenkergynpilgyn Island |
BERING SEA GROUP
| RR-12-01 | AS-092 | CK | R0K | Kosa meechkyn Island |
| RR-12-02 | AS-071 | CK | R0K | Arakamchechen Island (Incl. Yttygran) |
| RR-12-03 | AS-064 | KJ | R0X | Karaginskiy Island (Incl. Verkhoturova) |
| RR-12-04 | KJ | R0X | Natalii Island | |
| RR-12-05 | AS-095 | KT | R0Z | Krassheninnikova Island (Incl. Starichkov, Toporkov) |
| RR-12-06 | KT | R0Z | Utasshud Island | |
| RR-12-07 | AS-039 | KT | R0Z | Komandorskiye commander Islands (Incl. Beringa,...) |
SEA OF OKHOTSK GROUP
| RR-13-01 | AS-091 | KJ | R0X | Ptichiy Island |
| RR-13-02 | AS-091 | KJ | R0X | Zubchatyy Island (Incl. Dobrzhanskogo, Skala) |
| RR-13-03 | KJ | R0X | Chemenvytegartynup Island | |
| RR-13-04 | AS-091 | KJ | R0X | Tretiy Island |
| RR-13-05 | MG | R0I | Telan Island | |
| RR-13-06 | MG | R0I | Yamskiye Islands (Incl. Matykil, Atykan) | |
| RR-13-07 | AS-059 | MG | R0I | Zavyalova Islands (Incl. Spafaryeva) |
| RR-13-08 | AS-044 | HK | R0C | Shantarskiye Islands (Incl. Feklistova, Prokofyeva, Bolshoy shantar, Malyy Shantar, Sakharnaya golova, Medvezhiy) |
| RR-13-09 | AS-044 | HK | R0C | Menshikova Island (Incl. Reyneke) |
| RR-13-10 | AS-069 | HK | R0C | Iony Island |
| RR-13-11 | HK | R0C | Malmminskiye Islands | |
| RR-13-12 | AS-018 | SL | R0F | Sakhalin Island (Incl. Ush, Gafovicha) |
| RR-13-13 | SL | R0F | Tyuleniy Island |
BAY OF SAKHALIN GROUP
| RR-14-01 | AS-114 | HK | R0C | Chkalov Island (incl Baydukov) |
| RR-14-02 | HK | R0C | Oremif Island | |
| RR-14-03 | HK | R0C | Pilamif Island |
KURIL ISLANDS GROUP
| RR-15-01 | AS-025 | SL | R0F | Paramushir Island (Incl. Atlasova, Shumshu, Onekotan, Shiashkatatn,...) |
| RR-15-02 | AS-025 | SL | R0F | Simushir Island (Incl. Raykoke, Matua, Rasshua, Ketoy,...) |
| RR-15-03 | AS-025 | SL | R0F | Uurup Island (Incl. Chernyye bratya, Broutona) |
| RR-15-04 | AS-025 | SL | R0F | Iturup Island |
| RR-15-05 | AS-025 | SL | R0F | Kunashir Island |
| RR-15-06 | AS-062 | SL | R0F | Malaya kurilskaya gryada (Habomai Islands) (Incl. Shikotan, Polonskogo, Zelenyy, Auchina, Yuriy,...) |
SEA OF JAPAN GROUP
| RR-16-01 | SL | R0F | Moneron Island | |
| RR-16-02 | AS-066 | PK | R0L | Russkiy Island (Incl. Rikorda) |
| RR-16-03 | AS-066 | PK | R0L | Putyatina Island (Incl. Askold) |
| RR-16-04 | PK | R0L | Rimskogo korsakova Islands | |
| RR-16-05 | PK | R0L | Forugelma Island |
SEA OF AZOV group
| RR-17-01 | KR | R6A | Dolgiye Islands |
| RR-17-02 | KR | R6A | Eyskaya kosa Islands |
| RR-17-03 | KR | R6A | Peschanye Islands |
| RR-17-04 | RO | R6L | Delta dona Islands |
CASPIAN SEA GROUP
| RR-18-01 | DA | R6W | Tyuleniy Island (Incl. Malyy zhemchuzhnyy, Morskoy, Biruchok, Moristyy, Chechen) |
| RR-18-02 | AO | R6U | Zudev Island (Incl. Morskoy Setnoy, Bolshoy, Zyudostinksky, Ukatnyy,...) |
LAKE LADOGA GROUP
| RR-19-01 | LO | R1C | Konevets Island |
| RR-19-02 | KL | R1N | Valaam Island (Incl. Mantsinsaari,...) |
LAKE ONEGA GROUP
| RR-20-01 | KL | R1N | Kizhi Island |
LAKE BAIKAL GROUP
| RR-21-01 | KL | R1N | Kizhi Island |
| RR-21-02 | BU | R0O | Bolshoy Ushkaniy Island |
RYBINSK SEA GROUP
| RR-22-01 | VO | R1Q | Vagagannikha Island (Incl. Ramen'ye, Annino, Tolkach, Silon, Demidkha,...) |
| RR-22-02 | TV | R3I | Ramensky Island (Incl. Sharitskiye, Seblovskiye,...) |
| RR-22-03 | JA | R3M | Svyatoy mokh Island (Incl. Shumarovskiy, Radovskiy, Yurshinskiy,...) |
