There is a pubkey field in nip-11 but its for the owner. Although depending on how you look at it you could consider the npub that is moderating the relay the "owner"

Also nip-66 has support for relays that are addressed by their npubs 

 Whatcha coming for 🌈 and when? 

 https://instagram.flhr2-3.fna.fbcdn.net/o1/v/t16/f1/m86/AF4B62E8F3604BEF35B3E096B5F3B3B4_video_dashinit.mp4?stp=dst-mp4&efg=eyJ2ZW5jb2RlX3RhZyI6InZ0c192b2RfdXJsZ2VuLmNsaXBzLmMyLjcyMC5iYXNlbGluZSJ9&_nc_cat=103&vs=544651748125710_3520599999&_nc_vs=HBksFQIYUmlnX3hwdl9yZWVsc19wZXJtYW5lbnRfc3JfcHJvZC9BRjRCNjJFOEYzNjA0QkVGMzVCM0UwOTZCNUYzQjNCNF92aWRlb19kYXNoaW5pdC5tcDQVAALIAQAVAhg6cGFzc3Rocm91Z2hfZXZlcnN0b3JlL0dDamVYUnNyRThmVXRtSURBS3lldXpicE1sTnhicV9FQUFBRhUCAsgBACgAGAAbABUAACb29bWA0uy4PxUCKAJDMywXQB7ul41P3zsYEmRhc2hfYmFzZWxpbmVfMV92MREAdf4HAA%3D%3D&ccb=9-4&oh=00_AYABCWHYDjtiAClNfrsHkEr4synhDanv5HIRydseJagZFA&oe=66EBC723&_nc_sid=8b3546 😂 

 不審者情報はチンダスだろうか