Can I use
?

Ping attribute

- LS

When used on an anchor, this attribute signifies that the browser should send a ping request the resource the attribute points to.

IE

  1. 5.5 - 10: Not supported
  2. 11: Not supported

Edge

  1. 12 - 16: Not supported
  2. 17 - 102: Supported
  3. 103: Supported

Firefox

  1. 2: Not supported
  2. 3 - 101: Disabled by default
  3. 102: Disabled by default
  4. 103 - 104: Disabled by default

Chrome

  1. 4 - 14: Support unknown
  2. 15 - 102: Supported
  3. 103: Supported
  4. 104 - 106: Supported

Safari

  1. 3.1 - 5.1: Not supported
  2. 6 - 15.4: Supported
  3. 15.5: Supported
  4. 16.0 - TP: Supported

Opera

  1. 9 - 12.1: Not supported
  2. 15 - 85: Supported
  3. 86: Supported
  4. 87: Supported

Safari on iOS

  1. 3.2 - 4.3: Not supported
  2. 5 - 15.4: Supported
  3. 15.5: Supported
  4. 16.0: Supported

Opera Mini

  1. all: Not supported

Android Browser

  1. 2.1 - 4.3: Not supported
  2. 4.4 - 4.4.4: Supported
  3. 103: Supported

Opera Mobile

  1. 10 - 12.1: Not supported
  2. 64: Supported

Chrome for Android

  1. 103: Supported

Firefox for Android

  1. 101: Disabled by default

UC Browser for Android

  1. 12.12: Supported

Samsung Internet

  1. 4 - 16.0: Supported
  2. 17.0: Supported

QQ Browser

  1. 10.4: Supported

Baidu Browser

  1. 7.12: Supported

KaiOS Browser

  1. 2.5: Disabled by default

While still in the WHATWG specification, this feature was removed from the W3C HTML5 specification in 2010.

Resources:
MDN Web Docs - Element ping attribute