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 2026/06/02

Number of unique hosts by country

country Hosts Percentage
China(CN) 90,185
 
44%
United States(US) 25,460
 
12%
Brazil(BR) 8,316
 
4%
India(IN) 7,663
 
4%
Pakistan(PK) 6,835
 
3%
Russian Federation(RU) 4,487
 
2%
Great Britain(United Kingdom)(GB) 3,767
 
2%
Indonesia(ID) 3,152
 
2%
Mexico(MX) 3,081
 
2%
Argentina(AR) 2,459
 
1%

Number of unique hosts by TCP dst port

Dst Port Hosts Percentage
23 47,676
 
< 1%
80 27,016
 
< 1%
8080 24,351
 
< 1%
445 23,968
 
< 1%
443 17,388
 
< 1%
8443 17,072
 
< 1%
2323 16,084
 
< 1%
8081 14,133
 
< 1%
5555 12,938
 
< 1%
9000 12,324
 
< 1%

Number of unique hosts by UDP dst port

Dst Port Hosts Percentage
8567 13,606
 
1%
27015 9,130
 
< 1%
8568 8,953
 
< 1%
161 4,407
 
< 1%
1900 3,817
 
< 1%
123 3,782
 
< 1%
5060 3,368
 
< 1%
1194 3,313
 
< 1%
1434 3,273
 
< 1%
5632 2,938
 
< 1%

Number of packets by country

Packets Percentage
United States(US) 80,274,286
 
41%
Great Britain(United Kingdom)(GB) 23,462,131
 
12%
Romania(RO) 18,550,413
 
9%
Germany(DE) 12,910,385
 
7%
Bulgaria(BG) 9,541,370
 
5%
China(CN) 6,784,593
 
3%
Netherlands(NL) 5,889,413
 
3%
Seychelles(SC) 5,373,788
 
3%
Canada(CA) 3,199,919
 
2%
Hong Kong(HK) 2,980,530
 
2%

Number of packets by TCP dst port

Dst Port Packets Percentage
23 31,327,817
 
17%
443 3,029,084
 
2%
80 2,896,971
 
2%
22 1,886,265
 
1%
8080 1,743,830
 
1%
3389 1,640,082
 
1%
8443 1,490,368
 
1%
17000 1,270,770
 
1%
5555 1,072,925
 
1%
2087 930,969
 
1%

Number of packets by UDP dst port

Dst Port Packets Percentage
27015 2,841,980
 
23%
5060 576,130
 
5%
161 318,600
 
3%
53 303,808
 
2%
1900 243,956
 
2%
123 224,682
 
2%
500 143,191
 
1%
5683 131,063
 
1%
5353 126,469
 
1%
1434 124,946
 
1%

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