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 2026/04/29

Number of unique hosts by country

country Hosts Percentage
China(CN) 72,450
 
20%
India(IN) 50,754
 
14%
Brazil(BR) 29,345
 
8%
United States(US) 29,169
 
8%
Bangladesh(BD) 9,051
 
2%
Philippines(PH) 8,946
 
2%
Argentina(AR) 8,589
 
2%
Pakistan(PK) 8,437
 
2%
Mexico(MX) 7,450
 
2%
Russian Federation(RU) 7,359
 
2%

Number of unique hosts by TCP dst port

Dst Port Hosts Percentage
23 193,760
 
1%
2323 40,060
 
< 1%
445 25,980
 
< 1%
80 24,649
 
< 1%
8080 23,187
 
< 1%
8443 15,488
 
< 1%
443 14,139
 
< 1%
6036 13,947
 
< 1%
17000 13,590
 
< 1%
5555 13,085
 
< 1%

Number of unique hosts by UDP dst port

Dst Port Hosts Percentage
5060 6,116
 
< 1%
8567 6,040
 
< 1%
161 5,260
 
< 1%
1900 4,737
 
< 1%
1434 4,101
 
< 1%
80 3,652
 
< 1%
53 3,591
 
< 1%
123 3,031
 
< 1%
54211 2,990
 
< 1%
5632 2,955
 
< 1%

Number of packets by country

Packets Percentage
United States(US) 55,274,517
 
32%
Great Britain(United Kingdom)(GB) 22,123,354
 
13%
Romania(RO) 18,448,415
 
11%
Bulgaria(BG) 17,567,159
 
10%
Germany(DE) 12,871,844
 
7%
Seychelles(SC) 7,447,863
 
4%
China(CN) 5,624,656
 
3%
Netherlands(NL) 5,459,246
 
3%
Russian Federation(RU) 4,054,555
 
2%
Hong Kong(HK) 2,134,981
 
1%

Number of packets by TCP dst port

Dst Port Packets Percentage
23 6,885,960
 
4%
443 2,960,223
 
2%
22 1,941,683
 
1%
80 1,820,912
 
1%
3389 1,628,794
 
1%
5555 1,497,349
 
1%
8728 942,477
 
1%
8080 853,354
 
1%
17000 802,093
 
1%
2222 790,438
 
< 1%

Number of packets by UDP dst port

Dst Port Packets Percentage
9034 448,857
 
4%
161 416,078
 
4%
1900 383,615
 
4%
5060 371,562
 
3%
123 298,186
 
3%
53 270,866
 
2%
1434 243,514
 
2%
11211 213,917
 
2%
3702 188,352
 
2%
3283 175,909
 
2%

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