nostr.21crypto.ch

Online

wss://nostr.21crypto.ch

main strfry relay provided by 21crypto.ch

Score75

Connection

Connect: 7 s
Read: 20 ms
Write: 34 ms
Network: Clearnet
Last checked: 3 hours ago
Last online: 3 hours ago

Uptime

Last 24 hours: 100%
Last 7 days: 100%

Each bar is one check (every 6 hours), newest on the right.

Popularity

Listed by users: 0
as read relay: 0
as write relay: 0
NIP-66 monitors: 4
Notes in the last hour: 169

Supported NIPs

Access & policy

Authentication (NIP-42): No
Payment required: No
Restricted writes: No
Sends AUTH challenge: No
Minimum PoW (NIP-13): None
Write test: Accepted our test event

Limits

Max message length: 131K
Max subscriptions: 200
Max filter limit: 500
Max content length: —n/a
Max event tags: —n/a

Overview

Software: strfry
Version: 1.1.0
Contact: —n/a
Countries: —n/a
Languages: —n/a
First seen: Oct 30, 2026, 12:17 AM UTC
Discovered via: nip66
Terms of service: View all

NIP-11 document

{
  "name": "nostr.21crypto.ch",
  "description": "main strfry relay provided by 21crypto.ch",
  "icon": "https://image.nostr.build/19b2f3f232b0a962b2cc2bd0d74156235b126102e45a3fc3be93c8528e05e034.png",
  "pubkey": "e78c8cf2030deb7e76dd096223b7795e2c1aab862a708bd1c5cccebdf21af45b",
  "self": "fa6e1b3d29296fe3d0a30f96928061fd28186ea5a32c86bc8f751f995f244517",
  "supported_nips": [
    1,
    2,
    4,
    9,
    11,
    28,
    40,
    45,
    70,
    77
  ],
  "software": "git+https://github.com/hoytech/strfry.git",
  "version": "1.1.0",
  "terms_of_service": "https://github.com/kriegalex/k3s-homelab/blob/main/social/nostr-strfry/policies/posting-policy.md",
  "limitation": {
    "max_message_length": 131072,
    "max_subscriptions": 200,
    "max_limit": 500
  }
}

Use this data

View JSON

curl

curl "/api/v1/relays/nostr.21crypto.ch"