There are a number of ways to get in touch with me. In order of preference, you can contact me in these ways.

By email.
Send me an email at hello at jashankj dot space. I read my email regularly, even when I’m on the road, but may be slow to reply.
By instant message.
I’m reachable on Signal, Slack, Discord, in rough order of preference. I’ve previously been fairly active on IRC. I’m online but idle at essentially all times unless something catastrophic has happened; and I tend to read messages fairly regularly.
By social network.
I’m @jashankj on Twitter.

I’m also on a range of social networks, though am very rarely active, so the chances I will see and reply to a message are significantly slimmer.

By telephony.
If you have my phone number, then yes, phone me. (Odds are, if you have my phone number, you have better contact with me via another means.) I’m also reachable via some internet telephony services, although you’re better off trying another channel.

In any case, please contact me by any other channel to arrange a call in advance!

I’ve previously tried to maintain a typical response time within twenty-four hours, though that depended on my workload; this has been exceptionally high, so responses are usually quite slow, and I apologise if I’ve not gotten to your message yet.