diff --git a/bgpdata/api.py b/bgpdata/api.py
index c6b26ee..f14ccb3 100644
--- a/bgpdata/api.py
+++ b/bgpdata/api.py
@@ -32,5 +32,5 @@ class AnnouncementResource(ModelResource):
 	class Meta:
 		list_allowed_methods = ['get']
 		detail_allowed_methods = ['get']
-		filtering = {'originAS': ALL_WITH_RELATIONS, 'router': ALL_WITH_RELATIONS}
+		filtering = {'originAS': ALL_WITH_RELATIONS, 'crawlAS': ALL_WITH_RELATIONS, 'router': ALL_WITH_RELATIONS}
 		queryset = Announcement.objects.all()
diff --git a/bgpdata/migrations/0015_auto_20170117_0034.py b/bgpdata/migrations/0015_auto_20170117_0034.py
new file mode 100644
index 0000000..a0eb9c6
--- /dev/null
+++ b/bgpdata/migrations/0015_auto_20170117_0034.py
@@ -0,0 +1,44 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django.db import models, migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('bgpdata', '0014_auto_20170113_2022'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='announcement',
+            name='crawlAS',
+            field=models.ForeignKey(related_name='crawl_as', to='bgpdata.AS', null=True),
+            preserve_default=True,
+        ),
+        migrations.AlterField(
+            model_name='crawlrun',
+            name='asCount',
+            field=models.IntegerField(default=0),
+            preserve_default=True,
+        ),
+        migrations.AlterField(
+            model_name='crawlrun',
+            name='asOfflineCount',
+            field=models.IntegerField(default=0),
+            preserve_default=True,
+        ),
+        migrations.AlterField(
+            model_name='crawlrun',
+            name='asOnlineCount',
+            field=models.IntegerField(default=0),
+            preserve_default=True,
+        ),
+        migrations.AlterField(
+            model_name='crawlrun',
+            name='peeringCount',
+            field=models.IntegerField(default=0),
+            preserve_default=True,
+        ),
+    ]
diff --git a/bgpdata/migrations/0016_auto_20170117_0103.py b/bgpdata/migrations/0016_auto_20170117_0103.py
new file mode 100644
index 0000000..11cef4f
--- /dev/null
+++ b/bgpdata/migrations/0016_auto_20170117_0103.py
@@ -0,0 +1,20 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django.db import models, migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('bgpdata', '0015_auto_20170117_0034'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='announcement',
+            name='originAS',
+            field=models.ForeignKey(to='bgpdata.AS', null=True),
+            preserve_default=True,
+        ),
+    ]
diff --git a/bgpdata/models.py b/bgpdata/models.py
index e5c4ff8..9002856 100644
--- a/bgpdata/models.py
+++ b/bgpdata/models.py
@@ -105,6 +105,9 @@ class AS(models.Model):
 	def getPeerings(self):
 		return Peering.objects.filter(Q(as1=self)|Q(as2=self))
 
+	def getAnnouncedPrefixes(self):
+		return list(set(map(lambda _x: "%(ip)s/%(prefix)s" % _x, self.announcement_set.all().values('ip', 'prefix'))))
+
 	def formatLastSeen(self):
 		if self.lastSeen:
 			return self.lastSeen.startTime.strftime("%d.%m.%Y %H:%I")
@@ -132,7 +135,8 @@ class Announcement(models.Model):
 	# NOTE: increase length for longer pathes (currently supports a length of ~85)
 	ASPath = models.CharField(max_length=512)
 	nextHop = models.GenericIPAddressField()
-	originAS = models.ForeignKey(AS)
+	originAS = models.ForeignKey(AS, null=True)
+	crawlAS = models.ForeignKey(AS, related_name='crawl_as', null=True)
 
 	def __unicode__(self):
 		return u"%s/%s via %s (crawl %s)" % (self.ip, self.prefix, self.ASPath, self.router.AS.crawl.pk)
diff --git a/bgpdata/templates/bgpdata/map.html b/bgpdata/templates/bgpdata/map.html
index 20c58a5..ee5bfe9 100644
--- a/bgpdata/templates/bgpdata/map.html
+++ b/bgpdata/templates/bgpdata/map.html
@@ -25,7 +25,7 @@
 
 var asdata = [
 {% for AS in ASses %}
-	{id: {{AS.pk}}, nodetype: "AS", asnumber: {{AS.number}}, label: "{{AS.number}}", neighbors: {{AS.getPeerings.count}}, crawled: {%if AS.directlyCrawled%}true{%else%}false{%endif%}, online: {%if AS.online%}true{%else%}false{%endif%}, lastSeenDate: "{{AS.formatLastSeen}}", lastSeen: {%if AS.lastSeen%}{{AS.lastSeen.pk}}{%else%}null{%endif%}, dismiss: true}{%if not forloop.last%},{%endif%}
+	{id: {{AS.pk}}, nodetype: "AS", asnumber: {{AS.number}}, label: "{{AS.number}}", neighbors: {{AS.getPeerings.count}}, crawled: {%if AS.directlyCrawled%}true{%else%}false{%endif%}, online: {%if AS.online%}true{%else%}false{%endif%}, lastSeenDate: "{{AS.formatLastSeen}}", lastSeen: {%if AS.lastSeen%}{{AS.lastSeen.pk}}{%else%}null{%endif%}, dismiss: true, announcements: [{% for a in AS.getAnnouncedPrefixes %}"{{a}}"{%if not forloop.last%},{%endif%}{%endfor%}]}{%if not forloop.last%},{%endif%}
 {%endfor%}
 ];
 
@@ -172,6 +172,11 @@ $('svg g').tipsy({
 			if(d.crawled) {
 				content += '<tr><th>Note</th><td>Directly crawled</td></tr>';
 			}
+			if(d.announcements.length > 0) {
+				content += '<tr><th>Netw.</th><td>';
+				content += d.announcements.join(", ")
+				content += '</td></tr>';
+			}
 			content += '</table>';
 
 			//(function(node) {
diff --git a/bin/crawl.py b/bin/crawl.py
index 672a372..0f66db9 100755
--- a/bin/crawl.py
+++ b/bin/crawl.py
@@ -127,13 +127,14 @@ def main():
 				if "/" not in route["prefix"]:
 					continue
 
-				originAS = currAS
+				crawlAS = currAS
 				if len(route["path"]) > 0:
-					originAS = getOrCreateAS(crawl, route["path"][0])
+					crawlAS = getOrCreateAS(crawl, route["path"][0])
+					originAS = getOrCreateAS(crawl, route["path"][-1])
 				ip, prefix = route["prefix"].split("/")
 				a = Announcement(router=currRouter, ip=ip, prefix=prefix,
 									ASPath=" ".join(route["path"]), nextHop=route["nexthop"],
-									originAS=originAS)
+									crawlAS=crawlAS, originAS=originAS)
 				a.save()
 		else:
 			print(" !! No routes found in host output")