Figure 1.
Figure 2.
Distribution of nodes of 13 root domain name servers in China
| Root domain name system (As of November 18, 2021) | Chinese Mainland (22 nodes) | Hong Kong (11 nodes) | Taipei (7 nodes) |
|---|---|---|---|
| A (Verisign) | - | 1 | - |
| E (NASA) | - | 2 | 1 |
| F (ISC) | BeiJing:1 | 3 | 2 |
| H (Army Research Laboratory, ARL) | - | 1 | - |
| I (Netnod, Switzerland) | BeiJing:1 | 1 | 1 |
| J (Verisign) | BeiJing:1 | 3 | - |
| K (RIPE NCC, Netherlands) | BeiJing:1 | - | 1 |
| L (ICAN N) | BeiJing:1 | - | 2 |
Type and quantity of top-level domain names
| TLD type of top-level domain name | Abbreviation | Current quantity |
|---|---|---|
| Common top-level domain name | gTLD | 3 |
| New generic top-level domain name | ngTLD | 1,240 |
| Country / region code top level domain name | ccTLD | 316 |
| Qualified generic top-level domain name | grTLD | 3 |
| Infrastructure top level domain name | (arpa) | 1 |
| Private top-level domain name | sTLD | 14 |
| Test top level domain name | tTLD | 11 |
| Total | - | 1,588 |
Average validation rate of DNSSEC in the world
| Country (and Region) | DNSSEC Average validation rate |
|---|---|
| India | 59.60% |
| Russia | 52.23% |
| America | 38.78% |
| China(mainland) | 0.93% |
| (Hong Kong) | 57.25% |
| (Taiwan) | 6.41% |
| (Macao) | 5.23% |
RFC category, quantity and DNS related quantity
| Category of RFC | Number of RFCs | Where the number of RFCs associated with or related to DNS |
|---|---|---|
| Standard | 122 | 5 |
| Proposed Standard | 3,819 | 142 |
| Best Current Practice | 301 | 25 |
| Informational | 2,791 | 87 |
| Experimental | 522 | 29 |
| Historic | 331 | 10 |
| Uncategorized | 887 | 1 |
| Total | 8,773 | 299 |