IPv6 Normalizer & Dual Formatter
Local ProcessingInspect canonical compressed, fully expanded, and 128-bit decimal representations of any IPv6 address.
How It Works & Processing Standards
Inspect canonical compressed, fully expanded, and 128-bit decimal representations of any IPv6 address.
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Current Limits
- Maximum input length: 100,000 characters
The same IPv6 address can be written many ways, which makes comparing and searching hard. Choose normalize, full or compressed under "Task" to get one consistent form.
What You Can Do
- Compressed
- Drops leading zeros and shortens the longest zero run to ::.
- Full
- Expands :: into 8 groups of 4 digits.
- Normalize
- The RFC 5952 recommended form: lower case and compressed.
How to Use IPv6 Normalizer & Dual Formatter
- 1Choose a taskNormalize, full or compressed.
- 2Enter an addressPaste the IPv6 address.
- 3CopyCopy the converted address.
Examples
Compress
Input: 2001:0db8:0000:0000:0000:0000:0000:0001
Result: 2001:db8::1
Expand
Input: 2001:db8::1
Result: 2001:0db8:0000:0000:0000:0000:0000:0001
Common Use Cases
- Comparing IPv6 addresses in logs or firewall rules in one format
- Writing configs or reverse-DNS records that need the full form
Frequently Asked Questions (FAQ)
How many times can :: appear?
Only once per address. Twice would make the number of zero groups ambiguous, so the address is invalid.