diff --git a/codexcrawler/application.nim b/codexcrawler/application.nim
index 5ef5fab..1593a0c 100644
--- a/codexcrawler/application.nim
+++ b/codexcrawler/application.nim
@@ -44,8 +44,10 @@ proc initializeLists(app: Application): Future[?!void] {.async.} =
   # The use of global state in nim-metrics is not pleasant.
   proc onTodoMetric(value: int64) =
     todoNodesGauge.set(value)
+
   proc onOkMetric(value: int64) =
     okNodesGauge.set(value)
+
   proc onNokMetric(value: int64) =
     nokNodesGauge.set(value)
 
diff --git a/codexcrawler/config.nim b/codexcrawler/config.nim
index 1fa4328..8f648f7 100644
--- a/codexcrawler/config.nim
+++ b/codexcrawler/config.nim
@@ -6,7 +6,7 @@ let doc =
 Codex Network Crawler. Generates network metrics.
 
 Usage:
-  codexcrawler [--logLevel=<l>] [--metricsAddress=<ip>] [--metricsPort=<p>] [--dataDir=<dir>] [--discoveryPort=<p>]
+  codexcrawler [--logLevel=<l>] [--metricsAddress=<ip>] [--metricsPort=<p>] [--dataDir=<dir>] [--discoveryPort=<p>] [--bootNodes=<n>]
 
 Options:
   --logLevel=<l>          Sets log level [default: TRACE]
@@ -14,6 +14,7 @@ Options:
   --metricsPort=<p>       Listen HTTP port of the metrics server [default: 8008]
   --dataDir=<dir>         Directory for storing data [default: crawler_data]
   --discoveryPort=<p>     Port used for DHT [default: 8090]
+  --bootNodes=<n>         Semi-colon-separated list of Codex bootstrap SPRs [default: testnet_sprs]
 """
 
 import strutils
@@ -25,11 +26,29 @@ type CrawlerConfig* = ref object
   metricsPort*: Port
   dataDir*: string
   discPort*: Port
+  bootNodes*: seq[string]
 
 proc `$`*(config: CrawlerConfig): string =
   "CrawlerConfig:" & " logLevel=" & config.logLevel & " metricsAddress=" &
     $config.metricsAddress & " metricsPort=" & $config.metricsPort & " dataDir=" &
-    config.dataDir & " discPort=" & $config.discPort
+    config.dataDir & " discPort=" & $config.discPort & " bootNodes=" &
+    config.bootNodes.join(";")
+
+proc getDefaultTestnetBootNodes(): seq[string] =
+  @[
+    "spr:CiUIAhIhAiJvIcA_ZwPZ9ugVKDbmqwhJZaig5zKyLiuaicRcCGqLEgIDARo8CicAJQgCEiECIm8hwD9nA9n26BUoNuarCEllqKDnMrIuK5qJxFwIaosQ3d6esAYaCwoJBJ_f8zKRAnU6KkYwRAIgM0MvWNJL296kJ9gWvfatfmVvT-A7O2s8Mxp8l9c8EW0CIC-h-H-jBVSgFjg3Eny2u33qF7BDnWFzo7fGfZ7_qc9P",
+    "spr:CiUIAhIhAyUvcPkKoGE7-gh84RmKIPHJPdsX5Ugm_IHVJgF-Mmu_EgIDARo8CicAJQgCEiEDJS9w-QqgYTv6CHzhGYog8ck92xflSCb8gdUmAX4ya78QoemesAYaCwoJBES39Q2RAnVOKkYwRAIgLi3rouyaZFS_Uilx8k99ySdQCP1tsmLR21tDb9p8LcgCIG30o5YnEooQ1n6tgm9fCT7s53k6XlxyeSkD_uIO9mb3",
+    "spr:CiUIAhIhA6_j28xa--PvvOUxH10wKEm9feXEKJIK3Z9JQ5xXgSD9EgIDARo8CicAJQgCEiEDr-PbzFr74--85TEfXTAoSb195cQokgrdn0lDnFeBIP0QzOGesAYaCwoJBK6Kf1-RAnVEKkcwRQIhAPUH5nQrqG4OW86JQWphdSdnPA98ErQ0hL9OZH9a4e5kAiBBZmUl9KnhSOiDgU3_hvjXrXZXoMxhGuZ92_rk30sNDA",
+    "spr:CiUIAhIhA7E4DEMer8nUOIUSaNPA4z6x0n9Xaknd28Cfw9S2-cCeEgIDARo8CicAJQgCEiEDsTgMQx6vydQ4hRJo08DjPrHSf1dqSd3bwJ_D1Lb5wJ4Qt_CesAYaCwoJBEDhWZORAnVYKkYwRAIgFNzhnftocLlVHJl1onuhbSUM7MysXPV6dawHAA0DZNsCIDRVu9gnPTH5UkcRXLtt7MLHCo4-DL-RCMyTcMxYBXL0",
+    "spr:CiUIAhIhAzZn3JmJab46BNjadVnLNQKbhnN3eYxwqpteKYY32SbOEgIDARo8CicAJQgCEiEDNmfcmYlpvjoE2Np1Wcs1ApuGc3d5jHCqm14phjfZJs4QrvWesAYaCwoJBKpA-TaRAnViKkcwRQIhANuMmZDD2c25xzTbKSirEpkZYoxbq-FU_lpI0K0e4mIVAiBfQX4yR47h1LCnHznXgDs6xx5DLO5q3lUcicqUeaqGeg",
+    "spr:CiUIAhIhAgybmRwboqDdUJjeZrzh43sn5mp8jt6ENIb08tLn4x01EgIDARo8CicAJQgCEiECDJuZHBuioN1QmN5mvOHjeyfmanyO3oQ0hvTy0ufjHTUQh4ifsAYaCwoJBI_0zSiRAnVsKkcwRQIhAJCb_z0E3RsnQrEePdJzMSQrmn_ooHv6mbw1DOh5IbVNAiBbBJrWR8eBV6ftzMd6ofa5khNA2h88OBhMqHCIzSjCeA",
+    "spr:CiUIAhIhAntGLadpfuBCD9XXfiN_43-V3L5VWgFCXxg4a8uhDdnYEgIDARo8CicAJQgCEiECe0Ytp2l-4EIP1dd-I3_jf5XcvlVaAUJfGDhry6EN2dgQsIufsAYaCwoJBNEmoCiRAnV2KkYwRAIgXO3bzd5VF8jLZG8r7dcLJ_FnQBYp1BcxrOvovEa40acCIDhQ14eJRoPwJ6GKgqOkXdaFAsoszl-HIRzYcXKeb7D9",
+  ]
+
+proc getBootNodes(input: string): seq[string] =
+  if input == "testnet_sprs":
+    return getDefaultTestnetBootNodes()
+  return input.split(";")
 
 proc parseConfig*(): CrawlerConfig =
   let args = docopt(doc, version = crawlerFullVersion)
@@ -43,4 +62,5 @@ proc parseConfig*(): CrawlerConfig =
     metricsPort: Port(parseInt(get("--metricsPort"))),
     dataDir: get("--dataDir"),
     discPort: Port(parseInt(get("--discoveryPort"))),
+    bootNodes: getBootNodes(get("--bootNodes")),
   )