STD Codes in India: How to Dial Any City Correctly (2026 Guide)
Complete list of STD codes (area codes) for major Indian cities + how to dial landlines correctly from India or abroad
1,450 words · 15 min read · Updated January 2026
STD (Subscriber Trunk Dialing) codes — also known as area codes — are still essential for dialing landline numbers in India in 2026. While most people now use mobile phones, landlines remain common in offices, government offices, older homes, and many businesses. Knowing the correct STD code and format is crucial to avoid “number not reachable” errors.
This guide gives you:
- Full list of STD codes for major Indian cities and states
- Correct landline number format
- How to dial landlines from within India
- How to dial landlines from abroad (for NRIs, travelers, remote workers)
- Common mistakes and how to avoid them
At Dial91, we help millions dial India correctly every year. Use this guide to call any Indian city landline accurately.
1. How Indian Landline Numbers Work (STD Code Format)
Indian landline numbers consist of:
- STD code (area code): 2–4 digits
- Subscriber number: 6–8 digits
Correct international format: +91 – STD Code – Subscriber Number
Examples:
- Delhi: +91 11 2345 6789
- Mumbai: +91 22 8765 4321
- Small town (e.g., Nagpur): +91 712 254 3210
2. Major STD Codes for Indian Cities (2026)
Metro Cities & Major Urban Areas
- Delhi / NCR: 11
- Mumbai: 22
- Kolkata: 33
- Chennai: 44
- Bengaluru: 80
- Hyderabad: 40
- Ahmedabad: 79
- Pune: 20
- Jaipur: 141
- Lucknow: 522
- Chandigarh: 172
- Indore: 731
- Coimbatore: 422
- Surat: 261
Other Important Cities & States
- Agra: 562
- Ajmer: 145
- Amritsar: 183
- Bhopal: 755
- Bhubaneswar: 674
- Goa (Panaji): 832
- Guwahati: 361
- Kochi: 484
- Ludhiana: 161
- Madurai: 452
- Mysore: 821
- Nagpur: 712
- Patna: 612
- Raipur: 771
- Ranchi: 651
- Thiruvananthapuram: 471
- Vadodara: 265
- Varanasi: 542
- Vishakhapatnam: 891
3. How to Dial Landlines from Within India
From any city in India (except the same local area):
Format: 0 – STD Code – Subscriber Number
Examples:
- From Mumbai to Delhi: 011 2345 6789
- From Delhi to Mumbai: 022 8765 4321
- From Bangalore to Chennai: 044 1234 5678
From the same city: Just dial the subscriber number (no 0 or STD code).
4. How to Dial Indian Landlines from Abroad (NRIs, Travelers, Remote Workers)
Format: +91 – STD Code – Subscriber Number
Examples:
- Delhi landline: +91 11 2345 6789
- Mumbai landline: +91 22 8765 4321
- Pune landline: +91 20 2543 2109
Important tips:
- Always include +91 (India country code)
- Never add extra 0s or 00 – just +91 + STD code + number
- Save contacts with +91 already included
- Use VoIP (Dial91, Google Voice) for cheap rates – carriers charge $0.20–$2+/min
5. Common Dialing Mistakes (and How to Fix Them)
- Adding 0 before STD code from abroad → Wrong: +91 011 2345 6789 → Fix: +91 11 2345 6789
- Forgetting STD code → Wrong: +91 2345 6789 → Fix: +91 11 2345 6789
- Using 10-digit mobile format for landline → Wrong: +91 1123456789 → Fix: +91 11 2345 6789
- Using old 11-digit format → Wrong: +919112345678 → Fix: +91 11 2345 6789
Quick Reference – Dialing India Landlines
From abroad: +91 – STD Code – Subscriber Number
From India (different city): 0 – STD Code – Subscriber Number
From same city: Just Subscriber Number
Call any Indian city landline correctly & affordably with Dial91.
→ Start Calling Today
Final Thoughts
Indian STD codes (area codes) are simple in 2026: 2–4 digits for landlines, always included after +91 when calling from abroad. Major cities like Delhi (11), Mumbai (22), Bangalore (80), and Chennai (44) are easy to remember. Save numbers correctly once, use VoIP for cheap rates, and you’ll never get a “wrong number” error again. Whether calling offices, relatives on landlines, or customer support, you’re now fully prepared to dial any Indian city correctly.
