<p>There is a list <a href="https://en.bitcoin.it/wiki/Base58Check_encoding#Version_bytes" rel="nofollow">here</a>, and a more detailed one <a href="https://en.bitcoin.it/wiki/List_of_address_prefixes" rel="nofollow">here</a>. 3 is indeed for a Bitcoin script hash.</p>

CC BY-SA 3.0
2012-02-18T22:21:16.157Z
I looked at http://blockexplorer.com/testnet/block/00000000f2094d5227b836ef4c7ea23f9a3f248e7eb6ac487a49c54ced55e531 to see some example testnet addresses.  They start with 'm' and 'n' there...  I'm guessing the wiki page is wrong.
Chris Moore
CC BY-SA 3.0
2012-02-18T22:22:40.057Z
I was hoping for a more complete list - there are all kinds of altchains (solidcoin, litecoin, tenebrix, ixcoin, geistgeld (?), etc.), none of which I care about, but it would be useful to have a definitive list that would let me know what kind of an address I was looking at.
Chris Moore
CC BY-SA 3.0
2012-02-19T01:41:02.867Z
The wiki page was changed in this revision: https://en.bitcoin.it/w/index.php?title=Base58Check_encoding&diff=20952&oldid=20486 - the same change which makes the page say things like "Bitcoin addresses always start with the digit '3'".
Chris Moore
CC BY-SA 3.0
2012-02-19T06:36:02.750Z
Sounds like the kind of edit Luke would make. I created a more complete list at https://en.bitcoin.it/wiki/List_of_address_prefixes , but it still requires some work.
Meni Rosenfeld
CC BY-SA 3.0
2012-02-20T02:55:03.950Z
Thanks Meni.  I worked on your page a bit, filling in all the missing values.  There are probably more altchains that need adding though.
Chris Moore
CC BY-SA 3.0
2012-02-20T09:10:27.887Z
@ChrisMoore Great work.
Meni Rosenfeld
CC BY-SA 3.0
2012-02-18T21:31:32.797Z
2012-02-19T06:34:27.400Z
2012-02-19T06:34:27.400Z
Meni Rosenfeld
<p>I know Bitcoin addresses start with <code>1</code>, and it seems that testnet addresses start with <code>m</code> or <code>n</code>, and Namecoin addresses start with <code>N</code>, but is there a more complete list that would allow me to identify the coin type from an address?  I hope this isn't offtopic, asking about other block chains.</p>

<p>I specifically want to know what these addresses are for (they're embedded in the executable linked to in <a href="https://bitcoin.stackexchange.com/q/2778/659">this question</a>):</p>

<pre><code>3Q9yidc7Sqwj4fkFmomzC4fqyFzNGTA21x
3Nw1sp46VjHyVDDAaQhDHZSX4xvoqNzrBs
3NjPgjfMAAbamPE5PcgvXHSkCzq4kqijpH
</code></pre>

<p>but a complete list associating address prefixes with coin types would be more useful.</p>

CC BY-SA 3.0
2012-02-18T10:27:19.880Z
According to the last paragraph in https://en.bitcoin.it/wiki/BIP_0013#Rationale it looks like these are Bitcoin addresses, valid under BIP 13.  Is it possible this in-the-wild malware is ready for P2SH before the official client is?
Chris Moore
CC BY-SA 3.0
2012-02-18T16:29:37.033Z
Alternative blockchain-based currencies are on-topic, see http://meta.bitcoin.stackexchange.com/questions/15/are-questions-about-other-crypto-currencies-on-topic .
Meni Rosenfeld
<alternatives><address>
How can I identify the coin type from its address?
Chris Moore
# How can I identify the coin type from its address?

(Asked by: username_0 on 2012-02-18)

I know Bitcoin addresses start with `1`, and it seems that testnet addresses start with `m` or `n`, and Namecoin addresses start with `N`, but is there a more complete list that would allow me to identify the coin type from an address? I hope this isn't offtopic, asking about other block chains.

I specifically want to know what these addresses are for (they're embedded in the executable linked to in [this question](https://bitcoin.stackexchange.com/q/2778/659)):

```
3Q9yidc7Sqwj4fkFmomzC4fqyFzNGTA21x
3Nw1sp46VjHyVDDAaQhDHZSX4xvoqNzrBs
3NjPgjfMAAbamPE5PcgvXHSkCzq4kqijpH

```

but a complete list associating address prefixes with coin types would be more useful.

**Tags:** alternatives, address

> **Comments:**
> **username_0**: According to the last paragraph in https://en.bitcoin.it/wiki/BIP_0013#Rationale it looks like these are Bitcoin addresses, valid under BIP 13.  Is it possible this in-the-wild malware is ready for P2SH before the official client is?  
> **username_1**: Alternative blockchain-based currencies are on-topic, see http://meta.bitcoin.stackexchange.com/questions/15/are-questions-about-other-crypto-currencies-on-topic .  

---

## 1 answers

### Answer by username_1 on 2012-02-18. Score: 3 | Accepted answer

There is a list [here](https://en.bitcoin.it/wiki/Base58Check_encoding#Version_bytes), and a more detailed one [here](https://en.bitcoin.it/wiki/List_of_address_prefixes). 3 is indeed for a Bitcoin script hash.

> **Comments:**
> **username_0**: I looked at http://blockexplorer.com/testnet/block/00000000f2094d5227b836ef4c7ea23f9a3f248e7eb6ac487a49c54ced55e531 to see some example testnet addresses.  They start with 'm' and 'n' there...  I'm guessing the wiki page is wrong.  
> **username_0**: I was hoping for a more complete list - there are all kinds of altchains (solidcoin, litecoin, tenebrix, ixcoin, geistgeld (?), etc.), none of which I care about, but it would be useful to have a definitive list that would let me know what kind of an address I was looking at.  
> **username_0**: The wiki page was changed in this revision: https://en.bitcoin.it/w/index.php?title=Base58Check_encoding&diff=20952&oldid=20486 - the same change which makes the page say things like "Bitcoin addresses always start with the digit '3'".  
> **username_1**: Sounds like the kind of edit Luke would make. I created a more complete list at https://en.bitcoin.it/wiki/List_of_address_prefixes , but it still requires some work.  
> **username_0**: Thanks username_1.  I worked on your page a bit, filling in all the missing values.  There are probably more altchains that need adding though.  
> **username_1**: @username_0 Great work.  

---

