WHAT’S NICTER ?

Incident analysis center NICTER (Network Incident analysis Center for Tactical Emergency Response) is an integration of large-scale networking monitoring and analysis of cyber threats such as botnet or DDoS. Since 2005, NICTER has collaborated with numerous organizations both in Japan and overseas to distribute sensors to monitor darknet in real-time. A darknet is a set of globally announced unused IP addresses. Because there is no computer connected to the darknet, communication (packets) should not actually arrive under the normal usage of the internet. However, in reality, a large amount of packets arrives darknet: scan packets from a computer infected with malware searching for the next infection destination, spoofed packets bouncing back from a server to darknet (called backscatter), or internet-wide scan packets from those research organizations collecting data about internet-connected hosts and their open ports or services running etc. Observing and analysing such network traffic arriving at darknet guide us to the identification of new threats or unknown behavior of botnets which is one of the mission of NICTER's darknet observation.

Atlas

In Atlas, packets that reach the darknet are animated on the world map based on country, port numbers, and protocol information associated with the source and destination IP addresses.

Cube

Cube visualizes packets arriving at NICTER's darknet in a three-dimensional space, based on information about its source and destination IP address.
 

Stats visualizes time series data of NICTER's darknet traffic (hosts and packets) in a specified period and unit time (5 minutes, 1 hour, 1 day).

In the top 10 list, you can display the top 10 countriese and ports for the specified day. You can go back up to 3 months.
Date of 2026/05/31

Number of unique hosts by country

country Hosts Percentage
China(CN) 64,549
 
42%
United States(US) 21,521
 
14%
Brazil(BR) 6,204
 
4%
Pakistan(PK) 6,009
 
4%
India(IN) 4,512
 
3%
Russian Federation(RU) 3,383
 
2%
Mexico(MX) 2,934
 
2%
Great Britain(United Kingdom)(GB) 2,350
 
2%
Argentina(AR) 2,088
 
1%
Taiwan(TW) 1,953
 
1%

Number of unique hosts by TCP dst port

Dst Port Hosts Percentage
23 41,933
 
< 1%
80 23,062
 
< 1%
8080 20,927
 
< 1%
445 16,542
 
< 1%
2323 16,255
 
< 1%
8443 13,776
 
< 1%
443 13,763
 
< 1%
5555 13,636
 
< 1%
8081 13,580
 
< 1%
9000 11,453
 
< 1%

Number of unique hosts by UDP dst port

Dst Port Hosts Percentage
1900 4,281
 
< 1%
5060 4,066
 
< 1%
161 3,933
 
< 1%
1194 3,591
 
< 1%
1434 3,233
 
< 1%
27015 3,084
 
< 1%
5632 2,704
 
< 1%
5353 2,573
 
< 1%
500 2,568
 
< 1%
137 2,552
 
< 1%

Number of packets by country

Packets Percentage
United States(US) 67,708,533
 
33%
Seychelles(SC) 31,301,656
 
15%
Great Britain(United Kingdom)(GB) 23,054,676
 
11%
Romania(RO) 18,231,545
 
9%
Bulgaria(BG) 10,296,139
 
5%
Germany(DE) 9,492,253
 
5%
China(CN) 5,964,141
 
3%
Netherlands(NL) 5,902,678
 
3%
Hong Kong(HK) 2,740,691
 
1%
Pakistan(PK) 2,562,693
 
1%

Number of packets by TCP dst port

Dst Port Packets Percentage
23 29,293,701
 
15%
80 2,024,971
 
1%
443 1,944,612
 
1%
5900 1,781,826
 
1%
22 1,766,868
 
1%
3389 1,486,859
 
1%
8080 1,251,065
 
1%
17000 1,189,118
 
1%
5555 1,073,324
 
1%
2222 932,206
 
< 1%

Number of packets by UDP dst port

Dst Port Packets Percentage
27015 1,291,130
 
14%
5060 410,941
 
4%
53 234,527
 
3%
161 224,911
 
2%
389 162,549
 
2%
123 146,143
 
2%
1900 141,097
 
2%
5353 118,711
 
1%
3702 115,546
 
1%
1434 112,384
 
1%

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