This is a DNS-based crawler which crawls trough e164.arpa, the top level domain designated for ENUM. Specifically, it looks for NAPTR resource records sets, and tries to discover the whole "golden" ENUM tree
The ENUM crawler uses certain properties of the e164.arpa namespace to discover all numbers for which ENUM entries (NAPTRs) exist. A full crawling round takes a little longer than a week, currently, so that new numbers should appear after approximately that delay. However, certain nameserver implementations might prevent the crawler to discover all enum-enabled numbers.
| # | country name | E.164 | ENUMs |
|---|---|---|---|
| 1.) | Taiwan, Province of China |
+886 | 799759 |
| 2.) | Portugal |
+351 | 42765 |
| 3.) | Norway |
+47 | 32397 |
| 4.) | Poland |
+48 | 25016 |
| 5.) | Austria |
+43 | 19828 |
| 6.) | Germany |
+49 | 16862 |
| 7.) | Sweden |
+46 | 15223 |
| 8.) | Korea, Republic of |
+82 | 10602 |
| 9.) | Slovakia |
+421 | 894 |
| 10.) | Romania |
+40 | 726 |
| 11.) | Czech Republic |
+420 | 534 |
| 12.) | Netherlands |
+31 | 108 |
| 13.) | Australia |
+61 | 105 |
| 14.) | Qatar |
+974 | 2 |
| 15.) | Brazil |
+55 | 2 |
| 16.) | Jordan |
+962 | 2 |
| 17.) | Greece |
+30 | 2 |