RethinkDNS runs on Cloudflare's servers, and by extension is present in all regions Cloudflare has a presence in, which is over 170+ locations worldwide (excluding Mainland China).

• Africa (16)

  1. Antananarivo, MG
  2. Cape Town, ZA
  3. Casablanca, MA
  4. Dakar, SN
  5. Dar Es Salaam, TZ
  6. Djibouti, DJ
  7. Durban, ZA
  8. Johannesburg, ZA
  9. Kigali, RW
  10. Lagos, NG
  11. Luanda, AO
  12. Maputo, MZ
  13. Mombasa, KE
  14. Monrovia, LR
  15. Port Louis, MU
  16. Reunion, FR

• Asia (36)

  1. Bandar Seri Begawan, BN
  2. Bangkok, TH
  3. Bengaluru, IN
  4. Cebu City, PH
  5. Chennai, IN
  6. Chittagong, BD
  7. Colombo, LK
  8. Dhaka, BD
  9. Hanoi, VN
  10. Ho Chi Minh City, VN
  11. Hong Kong
  12. Hyderabad, IN
  13. Islamabad, PK
  14. Jakarta, ID
  15. Johor Bahru, MY
  16. Karachi, PK
  17. Kathmandu, NP
  18. Kolkata, IN
  19. Kuala Lumpur, MY
  20. Lahore, PK
  21. Macau
  22. Male, MV
  23. Manila, PH
  24. Mumbai, IN
  25. Nagpur, IN
  26. New Delhi, IN
  27. Osaka, JP
  28. Phnom Penh, KH
  29. Seoul, KR
  30. Singapore, SG
  31. Taipei
  32. Thimphu, BT
  33. Tokyo, JP
  34. Ulaanbaatar, MN
  35. Vientiane, LA
  36. Yerevan, AM

• Europe (47)

  1. Amsterdam, NL
  2. Athens, GR
  3. Barcelona, ES
  4. Belgrade, RS
  5. Berlin, DE
  6. Brussels, BE
  7. Bucharest, RO
  8. Budapest, HU
  9. Chișinău, MD
  10. Copenhagen, DK
  11. Cork, IE
  12. Dublin, IE
  13. Düsseldorf, DE
  14. Edinburgh, GB
  15. Frankfurt, DE
  16. Geneva, CH
  17. Gothenburg, SE
  18. Hamburg, DE
  19. Helsinki, FI
  20. Istanbul, TR
  21. Kyiv, UA
  22. Lisbon, PT
  23. London, GB
  24. Luxembourg City, LU
  25. Madrid, ES
  26. Manchester, GB
  27. Marseille, FR
  28. Milan, IT
  29. Moscow, RU
  30. Munich, DE
  31. Nicosia, CY
  32. Oslo, NO
  33. Paris, FR
  34. Prague, CZ
  35. Reykjavík, IS
  36. Riga, LV
  37. Rome, IT
  38. Sofia, BG
  39. St. Petersburg, RU
  40. Stockholm, SE
  41. Tallinn, EE
  42. Thessaloniki, GR
  43. Vienna, AT
  44. Vilnius, LT
  45. Warsaw, PL
  46. Zagreb, HR
  47. Zürich, CH

• Middle East (12)

  1. Amman, JO
  2. Baghdad, IQ
  3. Baku, AZ
  4. Beirut, LB
  5. Doha, QA
  6. Dubai, AE
  7. Kuwait City, KW
  8. Manama, BH
  9. Muscat, OM
  10. Ramallah
  11. Riyadh, SA
  12. Tel Aviv, IL

• North America (46)

  1. Ashburn, US
  2. Atlanta, US
  3. Boston, US
  4. Buffalo, US
  5. Calgary, CA
  6. Charlotte, US
  7. Chicago, US
  8. Columbus, US
  9. Dallas, US
  10. Denver, US
  11. Detroit, US
  12. Honolulu, US
  13. Houston, US
  14. Indianapolis, US
  15. Jacksonville, US
  16. Kansas City, US
  17. Las Vegas, US
  18. Los Angeles, US
  19. Mcallen, US
  20. Memphis, US
  21. Miami, US
  22. Minneapolis, US
  23. Montgomery, US
  24. Montréal, CA
  25. Nashville, US
  26. Newark, US
  27. Norfolk, US
  28. Omaha, US
  29. Ottawa, CA
  30. Philadelphia, US
  31. Phoenix, US
  32. Pittsburgh, US
  33. Portland, US
  34. Richmond, US
  35. Sacramento, US
  36. Salt Lake City, US
  37. San Diego, US
  38. San Jose, US
  39. Saskatoon, CA
  40. Seattle, US
  41. St. Louis, US
  42. Tallahassee, US
  43. Tampa, US
  44. Toronto, CA
  45. Vancouver, CA
  46. Winnipeg, CA

• Oceania (7)

  1. Adelaide, AU
  2. Auckland, NZ
  3. Brisbane, AU
  4. Melbourne, AU
  5. Noumea, NC
  6. Perth, AU
  7. Sydney, AU

• South and Central America (24)

  1. Arica, CL
  2. Asuncion, PY
  3. Bogota, CO
  4. Buenos Aires, AR
  5. Cordoba, AR
  6. Curitiba, BR
  7. Fortaleza, BR
  8. Guatemala City, GT
  9. Lima, PE
  10. Medellín, CO
  11. Mexico City, MX
  12. Neuquen, AR
  13. Panama City, PA
  14. Paramaribo, SR
  15. Port-Au-Prince, HT
  16. Porto Alegre, BR
  17. Queretaro, MX
  18. Quito, EC
  19. Rio de Janeiro, BR
  20. St George's, GD
  21. São Paulo, BR
  22. Tegucigalpa, HN
  23. Valparaíso, CL
  24. Willemstad, CW