IPv4

CREATE TABLE hits (url String, from IPv4) ENGINE = MergeTree() ORDER BY url;

DESCRIBE TABLE hits;

┌─name─┬─type───┬─default_type─┬─default_expression─┬─comment─┬─codec_expression─┐
│ url  │ String │              │                    │         │                  │
│ from │ IPv4   │              │                    │         │                  │
└──────┴────────┴──────────────┴────────────────────┴─────────┴──────────────────┘

CREATE TABLE hits (url String, from IPv4) ENGINE = MergeTree() ORDER BY from;

INSERT INTO hits (url, from) VALUES ('https://wikipedia.org', '116.253.40.133')('https://clickhouse.com', '183.247.232.58')('https://clickhouse.com/docs/en/', '116.106.34.242');

SELECT * FROM hits;

┌─url────────────────────────────────┬───────────from─┐
│ https://clickhouse.com/docs/en/ │ 116.106.34.242 │
│ https://wikipedia.org              │ 116.253.40.133 │
│ https://clickhouse.com          │ 183.247.232.58 │
└────────────────────────────────────┴────────────────┘

SELECT toTypeName(from), hex(from) FROM hits LIMIT 1;

┌─toTypeName(from)─┬─hex(from)─┐
│ IPv4             │ B7F7E83A  │
└──────────────────┴───────────┘

SELECT toIPv4('127.0.0.1') = toIPv6('::ffff:127.0.0.1');

┌─equals(toIPv4('127.0.0.1'), toIPv6('::ffff:127.0.0.1'))─┐
│                                                       1 │
└─────────────────────────────────────────────────────────┘