diff --git a/bk/prefix/as4809.txt b/bk/prefix/as4809.txt
index d9a2ef3..64d48f4 100644
--- a/bk/prefix/as4809.txt
+++ b/bk/prefix/as4809.txt
@@ -154,6 +154,7 @@
 240e:ff:c027::/48
 240e:ff:c029::/48
 240e:ff:c032::/48
+240e:ff:c034::/48
 2605:9d80:9003::/48
 2605:9d80:9013::/48
 2605:9d80:9023::/48
diff --git a/bk/prefix/as4809.txt.manifest.json b/bk/prefix/as4809.txt.manifest.json
index ddc0539..ea4acbe 100644
--- a/bk/prefix/as4809.txt.manifest.json
+++ b/bk/prefix/as4809.txt.manifest.json
@@ -1,7 +1,7 @@
 {
   "schema": "backtrace.asn-prefixes/v1",
   "file": "as4809.txt",
-  "count": 189,
-  "sha256": "445bb76dc33e9a0137f68707537d17c403873421d4e72faea9acbd274ae762da",
-  "generated_at": "2026-08-01T03:14:04Z"
+  "count": 190,
+  "sha256": "733ea320df3ea00dc7b673f225550fb1683dfc3c7ab12ac5878b9f9a406ad0ec",
+  "generated_at": "2026-08-04T02:44:45Z"
 }
diff --git a/bk/prefix/as4837.txt b/bk/prefix/as4837.txt
index a695916..ca4d6c5 100644
--- a/bk/prefix/as4837.txt
+++ b/bk/prefix/as4837.txt
@@ -342,7 +342,9 @@
 2408:865f::/32
 2408:8660::/32
 2408:8662::/32
+2408:8662::/48
 2408:8663::/32
+2408:8663::/48
 2408:8664::/32
 2408:8665::/32
 2408:8666::/32
diff --git a/bk/prefix/as4837.txt.manifest.json b/bk/prefix/as4837.txt.manifest.json
index 6a103d8..486f10c 100644
--- a/bk/prefix/as4837.txt.manifest.json
+++ b/bk/prefix/as4837.txt.manifest.json
@@ -1,7 +1,7 @@
 {
   "schema": "backtrace.asn-prefixes/v1",
   "file": "as4837.txt",
-  "count": 492,
-  "sha256": "40ece28148fc843764a9b1cec48d07013d6e6fdc8697b601af93a45093e1908c",
-  "generated_at": "2026-07-30T15:51:08Z"
+  "count": 494,
+  "sha256": "dfd85f1d0d3147e55168a8c8c0aae9c9c0bad89f16d92139999affd011cc2f22",
+  "generated_at": "2026-08-04T02:44:45Z"
 }