Warzone Access Cards are special items that let you open hidden Bunkers scattered across the map. These Bunkers are packed with high-level loot, killstreaks, and sometimes even secret items. In this guide, we’ll go over what Access Cards are, where to find them, how to use them, and all the Bunker locations.

What are Warzone Access Cards?

Access Cards in Call of Duty: Warzone are special in-game items that act as keys to unlock Bunkers—underground locations packed with high-tier loot, killstreaks, and even hidden story elements. These cards are essential for players who want to maximize their gear, uncover Easter eggs, and gain a tactical edge.

There are currently two main types of Access Cards in the latest Warzone update: Blue and Red. Each opens specific Bunkers and offers different rewards.

Warzone Blue Card explained

The Blue Keycard is used to unlock a set of exclusive Bunkers—specifically Bunkers 2, 7, and 8—which contain powerful loot and unique items, including Nuke Schematics and a free UAV.

The Blue Keycard can also unlock hidden content like the Stadium Easter Egg, depending on the match and map conditions.

Warzone Red Access Card in detail

The Red Keycard grants access to Bunkers 4, 5, 6, and 9. These also contain valuable weapons and equipment, though without the unique items found in the Blue Bunkers.

Bonus: Code-Based Bunkers

Not all Bunkers require Access Cards. Some are unlocked by:

• Decoding Morse code from ringing phones
• Following multi-step Easter egg puzzles

These offer another layer of complexity and reward players who enjoy solving in-game mysteries.

Everything you need to know about Warzone Bunkers

Bunkers are underground locations filled with valuable loot such as:

• Legendary weapons
• Killstreaks (UAVs, Cluster Strikes, etc.)
• Cash, armor, and field upgrades
• Special items like Nuke Schematics or Specialist Perks

All Warzone Bunker locations

There are currently 11 Bunkers active across the map. Their access methods vary, and not all use codes anymore.

Access Cards are randomly found in loot crates, so a bit of luck and smart rotation are needed to open multiple Bunkers in one match.

How to unlock Bunker 11 in Warzone: Phone Puzzle

Bunker 11 is hidden in the northwest corner of the map, near the Military Base. To access it, you'll need to complete a special Easter egg involving activation phones scattered across Verdansk.

Step 1: Find an activation phone

These phones are located in various buildings around the map.

Interact with them until you hear a Russian voice providing a sequence of three numbers.

If the phone gives a busy signal, try another one.

Step 2: Translate the numbers

The Russian numbers correspond to specific phones on the map. Here's a quick reference:

• 1 – Один
• 2 – Два
• 3 – Три
• 4 – Четыре
• 5 – Пять
• 6 – Шесть
• 7 – Семь
• 8 – Восемь
• 9 – Девять
• 10 – Десять

For example, if the message says "три, четыре, шесть," it translates to 3, 4, 6.

Step 3: Visit the numbered phones

• Each number corresponds to a specific phone location on the map.
• Visit these phones in the exact order given by the activation phone.
• If you make a mistake, interact with a random phone three times to reset the sequence.

Step 4: Go to Bunker 11

• After successfully interacting with the numbered phones, head to Bunker 11.
• If done correctly, the bunker door will be open, granting you access.