Thanks, that led me to find the url through this page:

https://github.com/libbitcoin/libbitcoin-explorer/wiki/bx-settings

Eric Voskuil:
> The AirBitz testnet server is up.
>
> e
>
>> On Oct 19, 2016, at 1:59 PM, Police Terror <PoliceTerror@???> wrote:
>>
>> Does anyone have a testnet server running that I can develop against?
>>
>> Thanks.
>>
>> Eric Voskuil:
>>> See: https://github.com/libbitcoin/libbitcoin/pull/552
>>>
>>> Use:
>>>
>>> hd_private root(seed, hd_private::testnet);
>>> ec_private private(root.secret(), ec_private:: testnet);
>>>
>>> Note that hd_private >> assumes mainnet.
>>>
>>> e
>>>
>>> -----Original Message-----
>>> From: Libbitcoin [mailto:libbitcoin-bounces@lists.dyne.org] On Behalf Of Police Terror
>>> Sent: Wednesday, October 19, 2016 3:09 AM
>>> To: libbitcoin@???
>>> Subject: [Libbitcoin] libbitcoin on testnet
>>>
>>> Hello,
>>>
>>> Are there any testnet blockchain servers I can work with?
>>>
>>> Also what's the correct way to generate keys and addresses?
>>>
>>> hd_private defines the constant hd_private::mainnet. Why is there not a corresponding one for testnet?
>>>
>>> https://github.com/libbitcoin/libbitcoin/blob/master/include/bitcoin/bitcoin/wallet/hd_private.hpp#L40
>>>
>>> Lets say I do:
>>>
>>> hd_private root(seed, hd_private::mainnet);
>>>
>>> ec_private private(root.secret(), ec_private::mainnet);
>>>
>>> payment_address address(private);
>>>
>>> address.encoded();
>>>
>>> How would I change that for testnet?
>>>
>>> Thanks
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>>> Libbitcoin@???
>>> https://mailinglists.dyne.org/cgi-bin/mailman/listinfo/libbitcoin
>>>
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