diff --git a/certs/Certum-Domain-Validation-CA-SHA2.pem b/certs/Certum-Domain-Validation-CA-SHA2.pem
new file mode 100644
index 0000000..0cc17ac
--- /dev/null
+++ b/certs/Certum-Domain-Validation-CA-SHA2.pem
@@ -0,0 +1,176 @@
+Certificate:
+    Data:
+        Version: 3 (0x2)
+        Serial Number: 279744 (0x444c0)
+        Signature Algorithm: sha1WithRSAEncryption
+        Issuer: C=PL, O=Unizeto Technologies S.A., OU=Certum Certification Authority, CN=Certum Trusted Network CA
+        Validity
+            Not Before: Oct 22 12:07:37 2008 GMT
+            Not After : Dec 31 12:07:37 2029 GMT
+        Subject: C=PL, O=Unizeto Technologies S.A., OU=Certum Certification Authority, CN=Certum Trusted Network CA
+        Subject Public Key Info:
+            Public Key Algorithm: rsaEncryption
+                Public-Key: (2048 bit)
+                Modulus:
+                    00:e3:fb:7d:a3:72:ba:c2:f0:c9:14:87:f5:6b:01:
+                    4e:e1:6e:40:07:ba:6d:27:5d:7f:f7:5b:2d:b3:5a:
+                    c7:51:5f:ab:a4:32:a6:61:87:b6:6e:0f:86:d2:30:
+                    02:97:f8:d7:69:57:a1:18:39:5d:6a:64:79:c6:01:
+                    59:ac:3c:31:4a:38:7c:d2:04:d2:4b:28:e8:20:5f:
+                    3b:07:a2:cc:4d:73:db:f3:ae:4f:c7:56:d5:5a:a7:
+                    96:89:fa:f3:ab:68:d4:23:86:59:27:cf:09:27:bc:
+                    ac:6e:72:83:1c:30:72:df:e0:a2:e9:d2:e1:74:75:
+                    19:bd:2a:9e:7b:15:54:04:1b:d7:43:39:ad:55:28:
+                    c5:e2:1a:bb:f4:c0:e4:ae:38:49:33:cc:76:85:9f:
+                    39:45:d2:a4:9e:f2:12:8c:51:f8:7c:e4:2d:7f:f5:
+                    ac:5f:eb:16:9f:b1:2d:d1:ba:cc:91:42:77:4c:25:
+                    c9:90:38:6f:db:f0:cc:fb:8e:1e:97:59:3e:d5:60:
+                    4e:e6:05:28:ed:49:79:13:4b:ba:48:db:2f:f9:72:
+                    d3:39:ca:fe:1f:d8:34:72:f5:b4:40:cf:31:01:c3:
+                    ec:de:11:2d:17:5d:1f:b8:50:d1:5e:19:a7:69:de:
+                    07:33:28:ca:50:95:f9:a7:54:cb:54:86:50:45:a9:
+                    f9:49
+                Exponent: 65537 (0x10001)
+        X509v3 extensions:
+            X509v3 Basic Constraints: critical
+                CA:TRUE
+            X509v3 Subject Key Identifier: 
+                08:76:CD:CB:07:FF:24:F6:C5:CD:ED:BB:90:BC:E2:84:37:46:75:F7
+            X509v3 Key Usage: critical
+                Certificate Sign, CRL Sign
+    Signature Algorithm: sha1WithRSAEncryption
+    Signature Value:
+        a6:a8:ad:22:ce:01:3d:a6:a3:ff:62:d0:48:9d:8b:5e:72:b0:
+        78:44:e3:dc:1c:af:09:fd:23:48:fa:bd:2a:c4:b9:55:04:b5:
+        10:a3:8d:27:de:0b:82:63:d0:ee:de:0c:37:79:41:5b:22:b2:
+        b0:9a:41:5c:a6:70:e0:d4:d0:77:cb:23:d3:00:e0:6c:56:2f:
+        e1:69:0d:0d:d9:aa:bf:21:81:50:d9:06:a5:a8:ff:95:37:d0:
+        aa:fe:e2:b3:f5:99:2d:45:84:8a:e5:42:09:d7:74:02:2f:f7:
+        89:d8:99:e9:bc:27:d4:47:8d:ba:0d:46:1c:77:cf:14:a4:1c:
+        b9:a4:31:c4:9c:28:74:03:34:ff:33:19:26:a5:e9:0d:74:b7:
+        3e:97:c6:76:e8:27:96:a3:66:dd:e1:ae:f2:41:5b:ca:98:56:
+        83:73:70:e4:86:1a:d2:31:41:ba:2f:be:2d:13:5a:76:6f:4e:
+        e8:4e:81:0e:3f:5b:03:22:a0:12:be:66:58:11:4a:cb:03:c4:
+        b4:2a:2a:2d:96:17:e0:39:54:bc:48:d3:76:27:9d:9a:2d:06:
+        a6:c9:ec:39:d2:ab:db:9f:9a:0b:27:02:35:29:b1:40:95:e7:
+        f9:e8:9c:55:88:19:46:d6:b7:34:f5:7e:ce:39:9a:d9:38:f1:
+        51:f7:4f:2c
+-----BEGIN CERTIFICATE-----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=
+-----END CERTIFICATE-----
+Certificate:
+    Data:
+        Version: 3 (0x2)
+        Serial Number:
+            26:dd:d2:2b:46:c9:c4:4d:5a:69:4d:39:80:7e:72:ad
+        Signature Algorithm: sha256WithRSAEncryption
+        Issuer: C=PL, O=Unizeto Technologies S.A., OU=Certum Certification Authority, CN=Certum Trusted Network CA
+        Validity
+            Not Before: Sep 11 12:00:00 2014 GMT
+            Not After : Jun  9 10:46:39 2027 GMT
+        Subject: C=PL, O=Unizeto Technologies S.A., OU=Certum Certification Authority, CN=Certum Domain Validation CA SHA2
+        Subject Public Key Info:
+            Public Key Algorithm: rsaEncryption
+                Public-Key: (2048 bit)
+                Modulus:
+                    00:a1:25:63:df:8d:e4:20:07:d9:54:d1:d1:04:f6:
+                    17:e2:3e:47:fb:c3:74:25:b8:c4:bf:12:12:bc:e0:
+                    70:d1:39:05:c2:17:b3:f7:82:70:a0:4e:07:fe:10:
+                    2a:ff:db:0d:46:5e:24:94:a3:8b:45:9f:18:9b:ce:
+                    42:c4:ae:db:83:33:bc:c2:bb:b4:30:b6:a7:37:87:
+                    78:7b:48:cb:25:2c:82:bb:0a:48:12:60:76:89:ec:
+                    8e:cc:8f:1e:52:48:e9:86:02:5a:c2:b0:8a:7c:85:
+                    3d:d9:ff:60:4f:33:6c:a6:a1:a0:85:e1:d7:53:f2:
+                    ea:27:3d:65:a9:72:c1:08:83:cc:b0:25:9c:11:46:
+                    24:e0:3e:f4:a7:ef:ed:51:b1:65:93:42:b4:f6:e6:
+                    86:0a:10:79:32:36:58:b2:6b:a8:dc:d5:7a:1e:9d:
+                    14:ee:40:e7:b2:46:4c:bd:9a:29:c2:ec:f8:30:c1:
+                    62:02:2a:e2:1c:83:62:d0:85:36:1a:83:de:12:84:
+                    29:65:ef:d2:32:be:31:60:42:a8:cf:f8:dd:ea:d0:
+                    56:47:1d:bd:76:96:24:13:e7:be:d9:99:2b:fa:30:
+                    64:f1:8a:38:7a:a6:e1:2a:96:02:b0:9d:ba:d8:8f:
+                    6d:4e:7a:94:69:7d:b0:93:aa:74:e5:93:90:13:fa:
+                    a2:99
+                Exponent: 65537 (0x10001)
+        X509v3 extensions:
+            X509v3 Basic Constraints: critical
+                CA:TRUE
+            X509v3 Subject Key Identifier: 
+                E5:31:AD:BF:3A:11:96:F4:83:BC:50:3C:D4:B7:90:9B:90:EE:DE:25
+            X509v3 Authority Key Identifier: 
+                08:76:CD:CB:07:FF:24:F6:C5:CD:ED:BB:90:BC:E2:84:37:46:75:F7
+            X509v3 Key Usage: critical
+                Certificate Sign, CRL Sign
+            X509v3 CRL Distribution Points: 
+                Full Name:
+                  URI:http://crl.certum.pl/ctnca.crl
+            Authority Information Access: 
+                OCSP - URI:http://subca.ocsp-certum.com
+                CA Issuers - URI:http://repository.certum.pl/ctnca.cer
+            X509v3 Certificate Policies: 
+                Policy: X509v3 Any Policy
+                  CPS: http://www.certum.pl/CPS
+    Signature Algorithm: sha256WithRSAEncryption
+    Signature Value:
+        ba:bf:f0:e1:dd:4d:2b:42:43:64:58:df:64:f3:ff:80:1a:5f:
+        56:be:3b:a9:b2:76:f7:54:7a:4c:30:c1:99:24:4b:72:d2:ca:
+        d4:fa:08:c6:90:de:88:12:ed:f8:90:f9:fc:a9:84:fd:92:f2:
+        78:e5:db:c9:22:57:ab:41:30:42:6b:0b:9f:d7:73:33:fb:01:
+        67:1c:42:5c:8f:27:67:c7:6e:07:03:8d:0e:96:cb:0a:03:cc:
+        3e:f8:87:3c:35:30:cd:18:8c:d5:71:dd:cd:dd:61:b0:13:a3:
+        64:46:4e:fe:71:4e:6b:65:e9:14:04:f2:3f:a8:bd:0c:36:3d:
+        2a:5d:9e:07:f2:c2:4f:90:c5:5e:4d:18:37:d1:27:28:80:a4:
+        36:e5:ca:93:6a:65:0e:f8:93:b9:af:52:58:4b:7a:71:d8:ba:
+        f3:ef:d2:f3:f6:a2:97:e4:5d:14:02:9a:cb:e5:ae:b6:93:e1:
+        23:9f:9b:3f:46:f7:ee:8e:a1:00:5b:66:c3:1e:68:23:86:0f:
+        5d:77:ba:53:ad:f9:52:fb:70:15:c5:75:eb:cf:79:ad:49:7c:
+        f2:76:62:ae:44:2f:c5:5f:51:34:25:41:6a:12:0a:5f:8e:ae:
+        10:c4:43:89:35:fd:ec:ff:31:e6:ec:1e:87:e9:3a:7c:29:50:
+        45:41:a3:14
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----
diff --git a/doc/fw-addr-lists.md b/doc/fw-addr-lists.md
index ac34c88..bb2f3ce 100644
--- a/doc/fw-addr-lists.md
+++ b/doc/fw-addr-lists.md
@@ -20,7 +20,8 @@ This script downloads, imports and updates firewall address-lists. Its main
 purpose is to block attacking ip addresses, spam hosts, command-and-control
 servers and similar malicious entities. The default configuration contains
 lists from [abuse.ch](https://abuse.ch/) and
-[dshield.org](https://dshield.org/), and
+[dshield.org](https://dshield.org/) and
+[blocklist.de](https://www.blocklist.de/), and
 lists from [spamhaus.org](https://spamhaus.org/) are prepared.
 
 The address-lists are updated in place, so after initial import you will not
diff --git a/global-config.rsc b/global-config.rsc
index 6a37c0c..646eddb 100644
--- a/global-config.rsc
+++ b/global-config.rsc
@@ -101,6 +101,8 @@
       cert="GlobalSign Atlas R3 DV TLS CA 2022 Q3" };
     { url="https://www.dshield.org/block.txt"; cidr="/24";
       cert="R3" };
+    { url="https://lists.blocklist.de/lists/strongips.txt";
+      cert="Certum Domain Validation CA SHA2" };
 #    { url="https://www.spamhaus.org/drop/drop.txt";
 #      cert="Cloudflare Inc ECC CA-3" };
 #    { url="https://www.spamhaus.org/drop/edrop.txt";