diff -Nru maratona-kairos-20230113/chrony-sources/00_ntp.br.sources maratona-kairos-20230227.1/chrony-sources/00_ntp.br.sources
--- maratona-kairos-20230113/chrony-sources/00_ntp.br.sources	2022-07-01 15:04:13.000000000 +0000
+++ maratona-kairos-20230227.1/chrony-sources/00_ntp.br.sources	2023-02-27 15:33:33.000000000 +0000
@@ -1,9 +1,21 @@
 # ntp.br servers
-server a.st1.ntp.br iburst nts
-server b.st1.ntp.br iburst nts
-server c.st1.ntp.br iburst nts
-server d.st1.ntp.br iburst nts
-server a.ntp.br iburst nts
-server b.ntp.br iburst nts
-server c.ntp.br iburst nts
-server gps.ntp.br iburst nts
+
+# servers with nts support
+# a.st1.ntp.br
+server 200.160.7.186 iburst
+# b.st1.ntp.br
+server 201.49.148.135 iburst
+# c.st1.ntp.br
+server 200.186.125.195 iburst
+# d.st1.ntp.br
+server 200.20.186.76 iburst
+# gps.ntp.br
+server 200.160.7.193 iburst
+
+# servers without nts support
+# a.ntp.br
+server 200.160.0.8 iburst
+# b.ntp.br
+server 200.189.40.8 iburst
+# c.ntp.br
+server 200.192.232.8 iburst
diff -Nru maratona-kairos-20230113/chrony-sources/01_maratona-linux.sources maratona-kairos-20230227.1/chrony-sources/01_maratona-linux.sources
--- maratona-kairos-20230113/chrony-sources/01_maratona-linux.sources	2022-07-01 15:04:21.000000000 +0000
+++ maratona-kairos-20230227.1/chrony-sources/01_maratona-linux.sources	2023-02-27 15:34:55.000000000 +0000
@@ -1,2 +1,3 @@
 # Maratona Linux server
-server nutellaboot.naquadah.com.br iburst
+# nutellaboot.naquadah.com.br
+server 159.65.72.180 iburst
diff -Nru maratona-kairos-20230113/debian/changelog maratona-kairos-20230227.1/debian/changelog
--- maratona-kairos-20230113/debian/changelog	2023-01-14 03:10:10.000000000 +0000
+++ maratona-kairos-20230227.1/debian/changelog	2023-02-27 19:28:57.000000000 +0000
@@ -1,3 +1,15 @@
+maratona-kairos (20230227.1) jammy; urgency=medium
+
+  * Drop NTS and replace URLs by IPs
+
+ -- Davi Antônio da Silva Santos <antoniossdavi@gmail.com>  Mon, 27 Feb 2023 16:28:57 -0300
+
+maratona-kairos (20230227) jammy; urgency=medium
+
+  * Remove NTS from unsupported servers
+
+ -- Davi Antônio da Silva Santos <antoniossdavi@gmail.com>  Mon, 27 Feb 2023 10:09:49 -0300
+
 maratona-kairos (20230113) jammy; urgency=medium
 
   * Update copyright's years