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 2026/04/15

Number of unique hosts by country

country Hosts Percentage
China(CN) 69,647
 
41%
United States(US) 20,838
 
12%
India(IN) 10,239
 
6%
Brazil(BR) 9,135
 
5%
Pakistan(PK) 6,463
 
4%
Russian Federation(RU) 4,999
 
3%
Indonesia(ID) 2,969
 
2%
Mexico(MX) 2,922
 
2%
Viet Nam(VN) 2,388
 
1%
Argentina(AR) 2,094
 
1%

Number of unique hosts by TCP dst port

Dst Port Hosts Percentage
23 26,681
 
< 1%
80 25,435
 
< 1%
445 23,503
 
< 1%
8080 21,206
 
< 1%
443 13,560
 
< 1%
5555 12,799
 
< 1%
8443 12,699
 
< 1%
2323 11,901
 
< 1%
8081 11,846
 
< 1%
3306 10,163
 
< 1%

Number of unique hosts by UDP dst port

Dst Port Hosts Percentage
161 5,911
 
< 1%
5060 5,229
 
< 1%
28571 4,625
 
< 1%
1434 4,566
 
< 1%
53 3,922
 
< 1%
123 3,894
 
< 1%
1900 3,708
 
< 1%
4800 3,427
 
< 1%
47808 3,264
 
< 1%
62084 3,032
 
< 1%

Number of packets by country

Packets Percentage
United States(US) 49,822,758
 
40%
Great Britain(United Kingdom)(GB) 16,892,463
 
14%
Germany(DE) 8,785,898
 
7%
Netherlands(NL) 7,066,635
 
6%
Bulgaria(BG) 6,558,191
 
5%
China(CN) 5,810,884
 
5%
Russian Federation(RU) 3,802,621
 
3%
Seychelles(SC) 3,751,871
 
3%
Hong Kong(HK) 2,938,676
 
2%
Romania(RO) 2,748,679
 
2%

Number of packets by TCP dst port

Dst Port Packets Percentage
23 2,837,846
 
3%
443 2,823,144
 
3%
22 2,215,165
 
2%
3389 1,810,609
 
2%
5555 1,790,238
 
2%
80 1,763,391
 
2%
8728 1,033,153
 
1%
8080 892,203
 
1%
3306 728,158
 
1%
2222 724,573
 
1%

Number of packets by UDP dst port

Dst Port Packets Percentage
5060 415,455
 
5%
53 376,392
 
4%
123 339,697
 
4%
161 225,480
 
2%
1900 207,299
 
2%
389 155,167
 
2%
11211 140,071
 
2%
500 130,630
 
1%
5353 125,988
 
1%
1434 125,179
 
1%

Copyright © National Institute of Information and Communications Technology. All Rights Reserved.