Block 137.31.0.0
← back to the map index · 137.0.0.0/8
| Range | 137.31.0.0 - 137.31.255.255 |
|---|---|
| Prefix | 137.31.0.0/16 |
| Size | 65,536 addresses |
| Status | assigned — operator-held |
| Registry | ripencc |
| Country (delegation) | CH |
| Date | 19891017 |
| Opaque id | 5b85e57a-618a-4ee0-864b-9f764d38d3b1 |
| Block UUID | 4c31b9d9-6751-5579-962c-d9a5c4d10855 |
| Probes | 2,916 |
| RDAP state | own — the registry object is this block |
| RDAP service | rdap.arin.net |
| RDAP fetched | 2026-09-10T23:10:15Z |
| Flags | S the RDAP service is not the delegation registry's · C the delegation country and the RDAP country differ |
RIR delegation record
| registry | ripencc |
|---|---|
| country | CH |
| type | ipv4 |
| start | 137.31.0.0 |
| value | 65,536 |
| date | 19891017 |
| status | assigned |
| extensions | ['5b85e57a-618a-4ee0-864b-9f764d38d3b1'] |
RDAP summary
| handle | 137.31.0.0 - 137.31.3.255 |
|---|---|
| name | ZSCALER-FRANKFURT-AM-MAIN |
| type | LEGACY |
| parent handle | 137.31.0.0 - 137.31.255.255 |
| start address | 137.31.0.0 |
| end address | 137.31.3.255 |
| country | DE |
| organization | Zscaler Operations |
| events | {"registration": "2025-12-11T14:15:41Z", "last changed": "2025-12-11T14:15:41Z"} |
| entities | 3: abuse × 1, administrative × 1, registrant × 1, technical × 1 (contact details are not published) |
Probes in this block
2,916 probes; the first 60 are listed. An asterisk means phase 3 heard something back.
137.31.2.2 137.31.2.3 137.31.2.5 137.31.2.7 137.31.2.11 137.31.2.13 137.31.2.17 137.31.2.19 137.31.2.23 137.31.2.29 137.31.2.31 137.31.2.37 137.31.2.41 137.31.2.43 137.31.2.47 137.31.2.53 137.31.2.59 137.31.2.61 137.31.2.67 137.31.2.71 137.31.2.73 137.31.2.79 137.31.2.83 137.31.2.89 137.31.2.97 137.31.2.101 137.31.2.103 137.31.2.107 137.31.2.109 137.31.2.113 137.31.2.127 137.31.2.131 137.31.2.137 137.31.2.139 137.31.2.149 137.31.2.151 137.31.2.157 137.31.2.163 137.31.2.167 137.31.2.173 137.31.2.179 137.31.2.181 137.31.2.191 137.31.2.193 137.31.2.197 137.31.2.199 137.31.2.211 137.31.2.223 137.31.2.227 137.31.2.229 137.31.2.233 137.31.2.239 137.31.2.241 137.31.2.251 137.31.3.2 137.31.3.3 137.31.3.5 137.31.3.7 137.31.3.11 137.31.3.13
Who operates this: the layers, side by side
| Delegation file | assigned, CH, 19891017 |
|---|---|
| Registry object | own — the registry object is this block |
| Routing | not recorded |
| Authorization | not recorded |
| DNS pointing here | not recorded |
| Certificate | none presented |
The registry's verbatim RDAP answer is kept in the local work product dataflow.out/02_ip_block.json and is not published, because it carries registrant contact details.