Contact
— one person runs this site, and this is how to reach him —
Write to [email protected].
I read every message. I usually reply within 3 working days.
What to write about
- A wrong or outdated figure. Tell me which figure and, if you can, link the correct source. Corrections are my top priority.
- Privacy requests — unsubscribing, or asking what data we hold about you. See Privacy & Data Use.
- Payment issues — see Pricing & Refunds and include your payment ID.
- Anything else — suggestions, questions, or just a note. Those are welcome too.
Operator
This website is operated by Upamanyu Acharya, Mumbai, Maharashtra, India. It is an independent project, not affiliated with any metro authority or operator.