Nintendo Switch NAT Type Guide

Fix your Switch NAT type for better Nintendo Switch Online gaming experience

Understanding Switch NAT Types

Nintendo's unique NAT classification system explained

NAT Type A

Excellent - Can connect freely with all NAT types

  • Best possible connection
  • No restrictions
  • Can host games
  • Smooth online play

NAT Type B

Good - Can connect with most players

  • Good connectivity
  • Minor restrictions
  • Works with A, B, C
  • Recommended for most

NAT Type C

Moderate - Some connection limitations

  • Moderate restrictions
  • Cannot connect to D/F
  • May have matchmaking issues
  • Voice chat problems

NAT Type D

Poor - Significant connection issues

  • Heavy restrictions
  • Limited matchmaking
  • Cannot host games
  • Frequent disconnects

NAT Type F

Failed - Cannot connect to Nintendo services

  • Connection failed
  • Check internet settings
  • May need ISP help
  • Firewall blocking

Quick Fix Steps

Check Current NAT Type

  1. 1From HOME Menu, select System Settings
  2. 2Select Internet → Test Connection
  3. 3Look for NAT Type in the results
  4. 4Note your current type (A, B, C, D, or F)

Restart Network Equipment

  1. 1Turn off Nintendo Switch completely
  2. 2Unplug router and modem for 30 seconds
  3. 3Plug in modem first, wait for lights
  4. 4Plug in router, wait for connection
  5. 5Turn on Switch and retest

Update Switch Firmware

  1. 1Go to System Settings
  2. 2Select System → System Update
  3. 3Install any available updates
  4. 4Restart Switch after updating

Port Forwarding for Nintendo Switch

TCP Ports:

6667, 12400, 28910, 29900, 29901

UDP Ports:

1-65535

Nintendo Switch uses a wide range of UDP ports. Opening all UDP ports or using DMZ is often necessary.

Alternative: DMZ Setup

  1. 1. Find your Switch's IP address in Internet Settings
  2. 2. Access your router's DMZ settings
  3. 3. Enter the Switch's IP address
  4. 4. Save and restart router

Game-Specific Connection Tips

Common issues and solutions for popular Switch games

Splatoon 3

Communication errors

Ensure UDP ports 1-65535 are open. Use 5GHz WiFi for stability.

Super Smash Bros Ultimate

Lag and disconnections

Wired connection via USB adapter recommended. NAT Type A or B required.

Mario Kart 8 Deluxe

Cannot join friends

Both players need NAT Type B or better. Try creating new room.

Animal Crossing

Cannot visit islands

NAT Type C or better needed. Restart game if issues persist.

Pokemon Scarlet/Violet

Union Circle problems

All players need compatible NAT types (A/B work best).

Advanced Network Settings

Manual DNS Settings

Primary:8.8.8.8
Secondary:8.8.4.4

Google DNS can improve connection stability

MTU Settings

Value:1400

Lower MTU can help with connection stability

Best Practices for Switch Online Gaming

  • Use USB LAN Adapter

    Wired connection eliminates WiFi interference

  • 5GHz WiFi Over 2.4GHz

    Less interference and better stability

  • Close Apps on Switch

    Close other games/apps before online play

  • Position Switch Properly

    Keep away from other wireless devices

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