Registration rules of IDNs in NASK
The subject matter of the agreement with NASK is registration and maintenance of a domain name in ASCII format with "xn--" prefix (e.g. xn--aba-22a.pl), not in a Unicode format (e.g. żaba.pl). NASK stores ASCII domain format in zone files, WHOIS service and other inner databases. NASK does not store a Unicode format of IDN.
Domains in ASCII format are registered in accordance with a standard currently in force. NASK shall not be held liable for the results of adapting a worldwide recognized standard other than that applied on the day of registration of a domain name.
IDN, submitted to registration, must contain signs of only one of sets of defined national signs listed below. It is not allowed to combine signs of different sets.
Sets of defined national signs approved to use in registration of IDN at NASK:
| U+002D | HYPEN-MINUS |
| U+0030..U+0039 | DIGIT ZERO .. DIGIT 9 |
| U+0061..U+007A | LATIN SMALL LETTER A .. LATIN SMALL LETTER Z |
| U+00B7 | MIDDLE DOT |
| U+00E0 | LATIN SMALL LETTER A WITH GRAVE |
| U+00E1 | LATIN SMALL LETTER A WITH ACUTE |
| U+00E2 | LATIN SMALL LETTER A WITH CIRCUMFLEX |
| U+00E3 | LATIN SMALL LETTER A WITH TILDE |
| U+00E4 | LATIN SMALL LETTER A WITH DIAERESIS |
| U+00E5 | LATIN SMALL LETTER A WITH RING ABOVE |
| U+00E6 | LATIN SMALL LETTER AE |
| U+00E7 | LATIN SMALL LETTER C WITH CEDILLA |
| U+00E8 | LATIN SMALL LETTER E WITH GRAVE |
| U+00E9 | LATIN SMALL LETTER E WITH ACUTE |
| U+00EA | LATIN SMALL LETTER E WITH CIRCUMFLEX |
| U+00EB | LATIN SMALL LETTER E WITH DIAERESIS |
| U+00EC | LATIN SMALL LETTER I WITH GRAVE |
| U+00ED | LATIN SMALL LETTER I WITH ACUTE |
| U+00EE | LATIN SMALL LETTER I WITH CIRCUMFLEX |
| U+00EF | LATIN SMALL LETTER I WITH DIAERESIS |
| U+00F0 | LATIN SMALL LETTER ETH |
| U+00F1 | LATIN SMALL LETTER N WITH TILDE |
| U+00F2 | LATIN SMALL LETTER O WITH GRAVE |
| U+00F3 | LATIN SMALL LETTER O WITH ACUTE |
| U+00F4 | LATIN SMALL LETTER O WITH CIRCUMFLEX |
| U+00F5 | LATIN SMALL LETTER O WITH TILDE |
| U+00F6 | LATIN SMALL LETTER O WITH DIAERESIS |
| U+00F8 | LATIN SMALL LETTER O WITH STROKE |
| U+00F9 | LATIN SMALL LETTER U WITH GRAVE |
| U+00FA | LATIN SMALL LETTER U WITH ACUTE |
| U+00FB | LATIN SMALL LETTER U WITH CIRCUMFLEX |
| U+00FC | LATIN SMALL LETTER U WITH DIAERESIS |
| U+00FD | LATIN SMALL LETTER Y WITH ACUTE |
| U+00FE | LATIN SMALL LETTER THORN |
| U+00FF | LATIN SMALL LETTER Y WITH DIAERESIS |
| U+0101 | LATIN SMALL LETTER A WITH MACRON |
| U+0103 | LATIN SMALL LETTER A WITH BREVE |
| U+0105 | LATIN SMALL LETTER A WITH OGONEK |
| U+0107 | LATIN SMALL LETTER C WITH ACUTE |
| U+0109 | LATIN SMALL LETTER C WITH CIRCUMFLEX |
| U+010B | LATIN SMALL LETTER C WITH DOT ABOVE |
| U+010D | LATIN SMALL LETTER C WITH CARON |
| U+010F | LATIN SMALL LETTER D WITH CARON |
| U+0111 | LATIN SMALL LETTER D WITH STROKE |
| U+0113 | LATIN SMALL LETTER E WITH MACRON |
| U+0115 | LATIN SMALL LETTER E WITH BREVE |
| U+0117 | LATIN SMALL LETTER E WITH DOT ABOVE |
| U+0119 | LATIN SMALL LETTER E WITH OGONEK |
| U+011B | LATIN SMALL LETTER E WITH CARON |
| U+011D | LATIN SMALL LETTER G WITH CIRCUMFLEX |
| U+011F | LATIN SMALL LETTER G WITH BREVE |
| U+0121 | LATIN SMALL LETTER G WITH DOT ABOVE |
| U+0123 | LATIN SMALL LETTER G WITH CEDILLA |
| U+0125 | LATIN SMALL LETTER H WITH CIRCUMFLEX |
| U+0127 | LATIN SMALL LETTER H WITH STROKE |
| U+0129 | LATIN SMALL LETTER I WITH TILDE |
| U+012B | LATIN SMALL LETTER I WITH MACRON |
| U+012D | LATIN SMALL LETTER I WITH BREVE |
| U+012F | LATIN SMALL LETTER I WITH OGONEK |
| U+0131 | LATIN SMALL LETTER DOTLESS I |
| U+0135 | LATIN SMALL LETTER J WITH CIRCUMFLEX |
| U+0137 | LATIN SMALL LETTER K WITH CEDILLA |
| U+0138 | LATIN SMALL LETTER KRA |
| U+013A | LATIN SMALL LETTER L WITH ACUTE |
| U+013C | LATIN SMALL LETTER L WITH CEDILLA |
| U+013E | LATIN SMALL LETTER L WITH CARON |
| U+0142 | LATIN SMALL LETTER L WITH STROKE |
| U+0144 | LATIN SMALL LETTER N WITH ACUTE |
| U+0146 | LATIN SMALL LETTER N WITH CEDILLA |
| U+0148 | LATIN SMALL LETTER N WITH CARON |
| U+014B | LATIN SMALL LETTER ENG |
| U+014D | LATIN SMALL LETTER O WITH MACRON |
| U+014F | LATIN SMALL LETTER O WITH BREVE |
| U+0151 | LATIN SMALL LETTER O WITH DOUBLE ACUTE |
| U+0153 | LATIN SMALL LIGATURE OE |
| U+0155 | LATIN SMALL LETTER R WITRH ACUTE |
| U+0157 | LATIN SMALL LETTER R WITH CEDILLA |
| U+0159 | LATIN SMALL LETTER R WITH CARON |
| U+015B | LATIN SMALL LETTER S WITH ACUTE |
| U+015D | LATIN SMALL LETTER S WITH CIRCUMFLEX |
| U+015F | LATIN SMALL LETTER S WITH CEDILLA |
| U+0161 | LATIN SMALL LETTER S WITH CARON |
| U+0163 | LATIN SMALL LETTER T WITH CEDILLA |
| U+0165 | LATIN SMALL LETTER T WITH CARON |
| U+0167 | LATIN SMALL LETTER T WITH STROKE |
| U+0169 | LATIN SMALL LETTER U WITH TILDE |
| U+016B | LATIN SMALL LETTER U WITH MACRON |
| U+016D | LATIN SMALL LETTER U WITH BREVE |
| U+016F | LATIN SMALL LETTER U WITH RING ABOVE |
| U+0171 | LATIN SMALL LETTER U WITH DOUBLE ACUTE |
| U+0173 | LATIN SMALL LETTER U WITH OGONEK |
| U+0175 | LATIN SMALL LETTER W WITH CIRCUMFLEX |
| U+0177 | LATIN SMALL LETTER Y WITH CIRCUMFLEX |
| U+017A | LATIN SMALL LETTER Z WITH ACUTE |
| U+017C | LATIN SMALL LETTER Z WITH DOT ABOVE |
| U+017E | LATIN SMALL LETTER Z WITH CARON |
| U+002D | HYPEN-MINUS |
| U+0030..U+0039 | DIGIT ZERO .. DIGIT 9 |
| U+0390 | GREEK SMALL LETTER IOTA WITH DIALITYKA AND TONOS |
| U+03AC | GREEK SMALL LETTER ALPHA WITH TONOS |
| U+03AD | GREEK SMALL LETTER EPSILON WITH TONOS |
| U+03AE | GREEK SMALL LETTER ETA WITH TONOS |
| U+03AF | GREEK SMALL LETTER IOTA WITH TONOS |
| U+03B0 | GREEK SMALL LETTER UPSILON WITH DIALITYKA AND TONOS |
| U+03B1 | GREEK SMALL LETTER ALPHA |
| U+03B2 | GREEK SMALL LETTER BETA |
| U+03B3 | GREEK SMALL LETTER GAMMA |
| U+03B4 | GREEK SMALL LETTER DELTA |
| U+03B5 | GREEK SMALL LETTER EPSILON |
| U+03B6 | GREEK SMALL LETTER ZETA |
| U+03B7 | GREEK SMALL LETTER ETA |
| U+03B8 | GREEK SMALL LETTER THETA |
| U+03B9 | GREEK SMALL LETTER IOTA |
| U+03BA | GREEK SMALL LETTER KAPPA |
| U+03BB | GREEK SMALL LETTER LAMDA |
| U+03BC | GREEK SMALL LETTER MU |
| U+03BD | GREEK SMALL LETTER NU |
| U+03BE | GREEK SMALL LETTER XI |
| U+03BF | GREEK SMALL LETTER OMRICON |
| U+03C0 | GREEK SMALL LETTER PI |
| U+03C1 | GREEK SMALL LETTER RHO |
| U+03C2 | GREEK SMALL LETTER FINAL SIGMA |
| U+03C3 | GREEK SMALL LETTER SIGMA |
| U+03C4 | GREEK SMALL LETTER TAU |
| U+03C5 | GREEK SMALL LETTER UPSILON |
| U+03C6 | GREEK SMALL LETTER PHI |
| U+03C7 | GREEK SMALL LETTER CHI |
| U+03C8 | GREEK SMALL LETTER PSI |
| U+03C9 | GREEK SMALL LETTER OMEGA |
| U+03CA | GREEK SMALL LETTER IOTA WITH DIALYKTIKA |
| U+03CB | GREEK SMALL LETTER UPSILON WITH DIALYKTIKA |
| U+03CC | GREEK SMALL LETTER OMICRON WITH TONOS |
| U+03CD | GREEK SMALL LETTER UPSILON WITH TONOS |
| U+03CE | GREEK SMALL LETTER OMEGA WITH TONOS |
| U+002D | HYPEN-MINUS |
| U+0030..U+0039 | DIGIT ZERO .. DIGIT 9 |
| U+0430 | CYRILLIC SMALL LETTER A |
| U+0431 | CYRILLIC SMALL LETTER BE |
| U+0432 | CYRILLIC SMALL LETTER VE |
| U+0433 | CYRILLIC SMALL LETTER GHE |
| U+0434 | CYRILLIC SMALL LETTER DE |
| U+0435 | CYRILLIC SMALL LETTER IE |
| U+0436 | CYRILLIC SMALL LETTER ZHE |
| U+0437 | CYRILLIC SMALL LETTER ZE |
| U+0438 | CYRILLIC SMALL LETTER I |
| U+0439 | CYRILLIC SMALL LETTER SHORT I |
| U+043A | CYRILLIC SMALL LETTER KA |
| U+043B | CYRILLIC SMALL LETTER EL |
| U+043C | CYRILLIC SMALL LETTER EM |
| U+043D | CYRILLIC SMALL LETTER EN |
| U+043E | CYRILLIC SMALL LETTER O |
| U+043F | CYRILLIC SMALL LETTER PE |
| U+0440 | CYRILLIC SMALL LETTER ER |
| U+0441 | CYRILLIC SMALL LETTER ES |
| U+0442 | CYRILLIC SMALL LETTER TE |
| U+0443 | CYRILLIC SMALL LETTER U |
| U+0444 | CYRILLIC SMALL LETTER EF |
| U+0445 | CYRILLIC SMALL LETTER HA |
| U+0446 | CYRILLIC SMALL LETTER TSE |
| U+0447 | CYRILLIC SMALL LETTER CHE |
| U+0448 | CYRILLIC SMALL LETTER SHA |
| U+0449 | CYRILLIC SMALL LETTER SHCHA |
| U+044A | CYRILLIC SMALL LETTER HARD SIGN |
| U+044B | CYRILLIC SMALL LETTER YERU |
| U+044C | CYRILLIC SMALL LETTER SOFT SIGN |
| U+044D | CYRILLIC SMALL LETTER E |
| U+044E | CYRILLIC SMALL LETTER YU |
| U+044F | CYRILLIC SMALL LETTER YA |
| U+0450 | CYRILLIC SMALL LETTER IE WITH GRAVE |
| U+0451 | CYRILLIC SMALL LETTER IO |
| U+0452 | CYRILLIC SMALL LETTER DJE |
| U+0453 | CYRILLIC SMALL LETTER GJE |
| U+0454 | CYRILLIC SMALL LETTER UKRAINIAN IE |
| U+0455 | CYRILLIC SMALL LETTER DZE |
| U+0456 | CYRILLIC SMALL LETTER BYELORUSSIAN-UKRAINIAN I |
| U+0457 | CYRILLIC SMALL LETTER YI |
| U+0458 | CYRILLIC SMALL LETTER JE |
| U+0459 | CYRILLIC SMALL LETTER LJE |
| U+045A | CYRILLIC SMALL LETTER NJE |
| U+045B | CYRILLIC SMALL LETTER TSHE |
| U+045C | CYRILLIC SMALL LETTER KJE |
| U+045D | CYRILLIC SMALL LETTER I WITH GRAVE |
| U+045E | CYRILLIC SMALL LETTER SHORT U |
| U+045F | CYRILLIC SMALL LETTER DZHE |
| U+0491 | CYRILLIC SMALL LETTER GHE WITH UPTURN |
| U+04C2 | CYRILLIC SMALL LETTER ZHE WITH BREVE |
| U+002D | HYPEN-MINUS |
| U+0030..U+0039 | DIGIT ZERO .. DIGIT 9 |
| U+05D0 | HEBREW LETTER ALEF |
| U+05D1 | HEBREW LETTER BET |
| U+05D2 | HEBREW LETTER GIME |
| U+05D3 | HEBREW LETTER DALET |
| U+05D4 | HEBREW LETTER HE |
| U+05D5 | HEBREW LETTER VAV |
| U+05D6 | HEBREW LETTER ZAYIN |
| U+05D7 | HEBREW LETTER HET |
| U+05D8 | HEBREW LETTER TET |
| U+05D9 | HEBREW LETTER YOD |
| U+05DA | HEBREW LETTER FINAL KAF |
| U+05DB | HEBREW LETTER KAF |
| U+05DC | HEBREW LETTER LAMED |
| U+05DD | HEBREW LETTER FINAL MEM |
| U+05DE | HEBREW LETTER MEM |
| U+05DF | HEBREW LETTER FINAL NUN |
| U+05E0 | HEBREW LETTER NUN |
| U+05E1 | HEBREW LETTER SAMEKH |
| U+05E2 | HEBREW LETTER AYIN |
| U+05E3 | HEBREW LETTER FINAL PE |
| U+05E4 | HEBREW LETTER PE |
| U+05E5 | HEBREW LETTER FINAL TSADI |
| U+05E6 | HEBREW LETTER TSADI |
| U+05E7 | HEBREW LETTER QOF |
| U+05E8 | HEBREW LETTER RESH |
| U+05E9 | HEBREW LETTER SHIN |
| U+05EA | HEBREW LETTER TAV |
IMPORTANT!
Registration of a domain name, similar to the one already existing, is not allowed. A similar domain name is considered a name whose string of characters is similar to that of an existing domain name. Similarity of characters is determined automatically pursuant to the table below.
|
Latin set
|
Cyryllic set
|
Greek set
|
| 6 u+0036 | б u+0431 | |
| a u+0061 | а u+0430 | |
| c u+0063 | с u+0441 | |
| e u+0065 | е u+0435 | |
| i u+0069 | і u+0456 | |
| j u+006a | ј u+0458 | |
| o u+006f | о u+043e | ο u+03bf |
| p u+0070 | р u+0440 | ρ u+03c1 |
| r u+0072 | г u+0433 | |
| s u+0073 | ѕ u+0455 | |
| u u+0075 | υ u+03c5 | |
| v u+0076 | ν u+03bd | |
| x u+0078 | х u+0445 | |
| у u+0443 | ѐ u+0450 | |
| ë u+00eb | ё u+0451 | |
| ï u+00ef | ї u+0457 | ϊ u+03ca |
| ħ u+0127 | ό u+03cc | |
| ħ u+0127 | ћ u+045b | |
| ı u+0131 | ι u+03b9 | |
| ĸ u+0138 | к u+043a | κ u+03ba |
| п u+043f | π u+03c0 | |
| ф u+0444 | φ u+03c6 |
Example:
Existing domain name:
123-кор.pl #Unicode format
xn—123—o5dyo.pl #ACE format
All characters of a domain label (Unicode format) come from the Cyrillic set, with the sequence of numeric codes being:
U+0031 U+0032 U+0033 U+002d U+043a U+006F U+0070
1 2 3 - к o p
Similar domain names the registration of which is not allowed:
123-ĸop.pl #Unicode format
xn--123-op-6bb.pl #ACE format
All characters of a domain label (Unicode format) come from the Latin set, with the sequence of numeric codes being:
U+0031 U+0032 U+0033 U+002d U+0138 U+006F U+0070 1 2 3 - ĸ o p
123-κορ.pl #Unicode format
xn--123--end4ao.pl #ACE format
All characters of a domain label (Unicode format) come from the Greek set, with the sequence of numeric codes being:
U+0031 U+0032 U+0033 U+002d U+03BA U+03BF U+03C1 1 2 3 - κ ο ρ