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 2026/05/02

Number of unique hosts by country

country Hosts Percentage
India(IN) 81,538
 
16%
China(CN) 69,436
 
13%
Brazil(BR) 45,113
 
9%
United States(US) 43,457
 
8%
Mexico(MX) 17,027
 
3%
Bangladesh(BD) 13,981
 
3%
Argentina(AR) 13,172
 
3%
Philippines(PH) 12,494
 
2%
Russian Federation(RU) 10,127
 
2%
Saudi Arabia(SA) 9,592
 
2%

Number of unique hosts by TCP dst port

Dst Port Hosts Percentage
23 370,551
 
2%
2323 123,342
 
1%
80 22,904
 
< 1%
8080 21,156
 
< 1%
445 18,870
 
< 1%
8443 13,475
 
< 1%
443 12,297
 
< 1%
5555 11,501
 
< 1%
8081 11,017
 
< 1%
17000 9,471
 
< 1%

Number of unique hosts by UDP dst port

Dst Port Hosts Percentage
5060 6,958
 
< 1%
1900 5,176
 
< 1%
161 4,392
 
< 1%
53 4,354
 
< 1%
1194 3,643
 
< 1%
500 3,479
 
< 1%
5353 3,336
 
< 1%
1434 2,975
 
< 1%
5632 2,946
 
< 1%
5351 2,943
 
< 1%

Number of packets by country

Packets Percentage
United States(US) 151,117,175
 
35%
Bulgaria(BG) 45,889,992
 
11%
Germany(DE) 42,775,352
 
10%
Great Britain(United Kingdom)(GB) 35,916,171
 
8%
France(FR) 21,561,319
 
5%
Canada(CA) 17,230,884
 
4%
Romania(RO) 11,649,082
 
3%
Netherlands(NL) 11,077,667
 
3%
India(IN) 7,573,901
 
2%
China(CN) 6,729,132
 
2%

Number of packets by TCP dst port

Dst Port Packets Percentage
23 254,961,354
 
60%
443 2,828,187
 
1%
80 2,251,344
 
1%
22 1,741,017
 
< 1%
5555 1,574,923
 
< 1%
3389 1,341,628
 
< 1%
8080 1,019,837
 
< 1%
8728 1,003,331
 
< 1%
17000 736,863
 
< 1%
2222 689,965
 
< 1%

Number of packets by UDP dst port

Dst Port Packets Percentage
5060 651,594
 
6%
1900 354,049
 
3%
53 341,227
 
3%
161 245,245
 
2%
1434 211,533
 
2%
123 207,090
 
2%
389 202,256
 
2%
3702 156,749
 
2%
3478 138,710
 
1%
11211 138,601
 
1%

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