docs/sql-manual/sql-functions/ip-functions/ipv4-num-to-string.md

---
{
"title": "IPV4_NUM_TO_STRING",
"language": "en"
}
---

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## IPV4_NUM_TO_STRING

IPV4_NUM_TO_STRING

### Description

#### Syntax

`VARCHAR IPV4_NUM_TO_STRING(BIGINT ipv4_num)`

`VARCHAR INET_NTOA(BIGINT ipv4_num)`

Takes a Int16、Int32、Int64 number. Interprets it as an IPv4 address in big endian. Returns a string containing the corresponding IPv4 address in the format A.B.C.d (dot-separated numbers in decimal form).

#### Notice

Will return `NULL` if the input parameter is negative or larger than `4294967295`(num value of `'255.255.255.255'`). This function has an alias `INET_NOTA`.

### Example

```sql
mysql> select ipv4_num_to_string(3232235521);
+--------------------------------+
| ipv4_num_to_string(3232235521) |
+--------------------------------+
| 192.168.0.1                    |
+--------------------------------+
1 row in set (0.01 sec)

mysql> select num,ipv4_num_to_string(num) from ipv4_bi;
+------------+---------------------------+
| num        | ipv4_num_to_string(`num`) |
+------------+---------------------------+
|         -1 | NULL                      |
|          0 | 0.0.0.0                   |
| 2130706433 | 127.0.0.1                 |
| 4294967295 | 255.255.255.255           |
| 4294967296 | NULL                      |
+------------+---------------------------+
7 rows in set (0.01 sec)
```

### Keywords

IPV4_NUM_TO_STRING, INET_NTOA, IP