Venezuela Internet situation (specially DNS)

venezuela.md

Most DNS authoritative name servers for the ccTLD are down:

% date -u
Sun Mar 10 17:12:55 UTC 2019
% check-soa -i ve
azmodan.ula.ve.
	Cannot get the IPv6 address: read udp 127.0.0.1:59957->127.0.0.1:53: i/o timeout
ns-ext.nic.cl.
	2001:1398:1:0:200:1:123:14: OK: 2019030729 (201 ms)
	200.1.123.14: OK: 2019030729 (212 ms)
ns1.nic.ve.
	2001:1338::2: ERROR: read udp [2a01:e35:2fb3:e1d0:4862:c78f:972a:bf2]:54527->[2001:1338::2]:53: i/o timeout
	150.188.228.4: ERROR: read udp 192.168.2.1:52930->150.188.228.4:53: i/o timeout
ns2.nic.ve.
	2001:1338::3: ERROR: read udp [2a01:e35:2fb3:e1d0:4862:c78f:972a:bf2]:44615->[2001:1338::3]:53: i/o timeout
	150.188.228.5: ERROR: read udp 192.168.2.1:51309->150.188.228.5:53: i/o timeout
ns3.nic.ve.
	190.9.129.56: ERROR: read udp 192.168.2.1:54457->190.9.129.56:53: read: connection refused
ns4.nic.ve.
	190.202.128.43: OK: 2019030729 (160 ms)
sns-pb.isc.org.
	2001:500:2e::1: OK: 2019030729 (26 ms)
	192.5.4.1: OK: 2019030729 (144 ms)

The hypothesis (by the venezuelan governement) of an "US cyberattack" does not seem plausible since one of the two foreign name servers still working is managed in the US.

ns4.nic.ve, the only local name server working is at CANTV.

The only RIPE Atlas probe still working in Venezuela, #30045, is at IFX. https://atlas.ripe.net/probes/30045/

ns4.nic.ve is 190.202.128.43, part of the prefix 190.202.128.0/22. After the great breakage of yesterday (around 2340 UTC), the prefix is still perfectly visible. ns1.nic.ve is 150.188.228.4, part of the prefix 150.188.0.0/16 (same prefix than ns2.nic.ve). The prefix has not be seen since yesterday, 1600 UTC. Same thing for 150.185.0.0/16 (which host the two nameservers of ula.ve).

Don't forget also the Netblocks measurements: https://netblocks.org/reports/slow-recovery-as-venezuela-power-outage-approaches-4th-day-GXADaLBg