Autonomous System

AS17841

NATIONAL INFORMATION RESOURCES SERVICE

NATIONAL INFORMATION RESOURCES SERVICE South Korea 🌐 korea.kr

Announced IPs

227,328

CIDR prefixes

ASN

AS17841

Reputation · trust score

A transparent 0–100 signal. Every entity starts at a neutral baseline of 65; threat-intel blocklists, exposure, reverse-DNS, routing and allocation each adjust it up or down. Higher is more trustworthy.

57/100

Caution

How this score is built

Baseline (neutral) 65
Multiple-origin (MOAS) routing anomaly −12
Enterprise allocation +4
Trust score 57 / 100

Experimental · trust-vectors model v1.1.0 — a transparent heuristic, not a definitive verdict. How it works →

About National Information Resources Service

Parent

Ministry of the Interior and Safety

Official website ↗ Data from Wikidata

⚠ 9 MOAS prefixes — multiple origin ASNs detected

All MOAS anomalies →

A previously stable prefix originated by AS17841 is now also announced by another ASN (MOAS — Multiple-Origin AS), detected from our RIPE RIS collectors. Often benign (anycast, multi-homing, or a recent transfer) — but it can signal a route leak or prefix hijack, so it's worth inspecting.

Prefix	Origin ASNs	Last detected (UTC)
210.90.47.0/24	AS17574, AS17841	2026-07-18 11:22:44
115.84.165.0/24	AS17574, AS17841	2026-07-18 11:22:44
210.90.46.0/24	AS17574, AS17841	2026-07-18 11:22:44
115.84.163.0/24	AS17574, AS17841	2026-07-18 11:22:44
115.84.162.0/24	AS17574, AS17841	2026-07-18 11:22:44
115.84.164.0/24	AS17574, AS17841	2026-07-18 11:22:44
115.84.160.0/24	AS17574, AS17841	2026-07-17 19:22:38
211.253.60.0/24	AS17574, AS17841	2026-07-17 19:22:38
115.84.167.0/24	AS17574, AS17841	2026-07-17 19:22:38

Top CIDR ranges

CIDR	IPs	PTR Density	Organization	Country	State	City
27.101.0.0/16	65.5K	0.1%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
152.99.0.0/16	65.5K	0.2%	NATIONAL INFORMATION RESOURCES SERVICE	KR	North Chungcheong	Cheongju-si
116.67.0.0/17	32.8K	0.3%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
125.60.0.0/18	16.4K	0.4%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
125.128.64.0/19	8.2K	0.0%	NATIONAL INFORMATION RESOURCES SERVICE	KR	Seoul	Seodaemun-gu
203.238.160.0/20	4.1K	0.0%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
115.84.160.0/21	2.0K	0.3%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
210.99.48.0/21	2.0K	0.1%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
222.111.248.0/21	2.0K	0.0%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
168.126.120.0/22	1.0K	1.4%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
203.242.0.0/22	1.0K	0.0%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
211.42.72.0/22	1.0K	0.1%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
211.173.36.0/22	1.0K	0.2%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
222.111.168.0/22	1.0K	0.0%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
61.72.224.0/23	512	0.0%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
61.72.238.0/23	512	0.0%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
125.61.116.0/23	512	0.0%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
180.210.72.0/23	512	0.0%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
180.210.98.0/23	512	0.4%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
203.233.54.0/23	512	0.0%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
203.233.56.0/23	512	0.0%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
203.254.96.0/23	512	0.0%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
210.90.46.0/23	512	0.4%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
210.99.24.0/23	512	0.2%	NATIONAL INFORMATION RESOURCES SERVICE	KR	Ulsan	Ulsan
210.103.82.0/23	512	0.0%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
210.178.100.0/23	512	0.2%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
211.34.108.0/23	512	0.2%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
211.39.92.0/23	512	0.0%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
211.42.84.0/23	512	0.2%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
211.173.34.0/23	512	0.4%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
211.253.60.0/23	512	0.8%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
211.253.98.0/23	512	0.2%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
58.184.121.0/24	256	0.0%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
61.72.226.0/24	256	4.3%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
61.72.230.0/24	256	0.0%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
61.104.76.0/24	256	10.2%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
123.32.255.0/24	256	0.0%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
180.210.69.0/24	256	0.0%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
180.210.85.0/24	256	0.8%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
180.210.86.0/24	256	0.0%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
180.210.93.0/24	256	0.0%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
180.210.94.0/24	256	0.0%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
203.241.52.0/24	256	0.0%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
203.242.4.0/24	256	0.0%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
203.242.6.0/24	256	0.0%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
203.243.1.0/24	256	4.3%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
203.254.110.0/24	256	0.4%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
203.254.121.0/24	256	0.0%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
210.90.8.0/24	256	0.8%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
210.90.15.0/24	256	0.0%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
210.95.181.0/24	256	0.0%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
210.95.187.0/24	256	0.0%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
210.95.219.0/24	256	0.0%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
210.97.27.0/24	256	0.4%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
210.99.62.0/24	256	0.8%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
210.99.248.0/24	256	0.0%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
210.103.63.0/24	256	0.4%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
210.103.72.0/24	256	0.0%	NATIONAL INFORMATION RESOURCES SERVICE	KR	Daejeon	Seo-gu
210.103.81.0/24	256	1.2%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
210.104.41.0/24	256	0.4%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
210.104.140.0/24	256	0.8%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
210.104.148.0/24	256	0.0%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
210.104.249.0/24	256	0.0%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
210.104.250.0/24	256	0.0%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
210.106.108.0/24	256	0.0%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
210.179.148.0/24	256	0.0%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
210.179.205.0/24	256	1.2%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
211.34.86.0/24	256	0.0%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
211.39.76.0/24	256	0.0%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
211.39.91.0/24	256	0.0%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
211.39.94.0/24	256	0.0%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
211.42.86.0/24	256	0.0%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
211.57.153.0/24	256	0.0%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
211.61.29.0/24	256	0.0%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
211.112.154.0/24	256	0.0%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
211.114.22.0/24	256	0.0%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
211.114.24.0/24	256	0.0%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
211.173.46.0/24	256	0.0%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
211.184.197.0/24	256	0.0%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
211.250.131.0/24	256	3.9%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
211.252.37.0/24	256	0.8%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
211.252.203.0/24	256	0.0%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
211.253.60.0/24	256	0.0%	—	KR	—	—
211.253.62.0/24	256	0.0%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
211.253.82.0/24	256	0.0%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
211.253.121.0/24	256	0.0%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
211.253.122.0/24	256	0.0%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
211.253.124.0/24	256	0.0%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—
211.253.148.0/24	256	0.0%	NATIONAL INFORMATION RESOURCES SERVICE	KR	—	—

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS17841 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

Prefix	Announcement samples	Last seen
152.99.161.0/24	12,910	2026-07-18 10:52:41
152.99.164.0/24	12,909	2026-07-18 10:52:41
152.99.139.0/24	12,908	2026-07-18 10:52:41
152.99.137.0/24	12,907	2026-07-18 10:52:41
152.99.134.0/24	12,903	2026-07-18 10:52:41
152.99.135.0/24	12,902	2026-07-18 10:52:41
152.99.165.0/24	12,899	2026-07-18 10:52:41
152.99.162.0/24	12,891	2026-07-18 10:52:41
152.99.167.0/24	12,880	2026-07-18 10:52:41
152.99.138.0/24	12,875	2026-07-18 10:52:41
152.99.163.0/24	12,843	2026-07-18 10:52:41
152.99.136.0/24	12,836	2026-07-18 10:52:41
211.42.72.0/22	12,675	2026-07-18 10:52:50
211.42.84.0/23	12,667	2026-07-18 10:52:50
211.42.86.0/24	12,667	2026-07-18 10:52:50
152.99.21.0/24	12,403	2026-07-18 10:52:41
152.99.22.0/24	12,403	2026-07-18 10:52:41
152.99.26.0/24	12,380	2026-07-18 10:52:41
152.99.24.0/24	12,344	2026-07-18 10:52:41
152.99.27.0/24	12,329	2026-07-18 10:52:41
152.99.25.0/24	12,318	2026-07-18 10:52:41
152.99.146.0/24	10,575	2026-07-18 10:52:41
152.99.147.0/24	10,564	2026-07-18 10:52:41
152.99.148.0/24	10,534	2026-07-18 10:52:41
152.99.149.0/24	10,531	2026-07-18 10:52:41
152.99.142.0/24	10,527	2026-07-18 10:52:41
152.99.144.0/24	10,526	2026-07-18 10:52:41
152.99.143.0/24	10,518	2026-07-18 10:52:41
152.99.145.0/24	10,501	2026-07-18 10:52:41
152.99.141.0/24	10,498	2026-07-18 10:52:41
152.99.160.0/24	10,491	2026-07-18 10:52:41
222.111.248.0/24	10,455	2026-07-18 10:52:41
152.99.41.0/24	9,617	2026-07-18 10:52:41
152.99.42.0/24	9,592	2026-07-18 10:52:41
152.99.43.0/24	9,587	2026-07-18 10:52:41
152.99.40.0/24	9,575	2026-07-18 10:52:41
125.61.117.0/24	9,445	2026-07-18 10:52:50
125.61.116.0/24	9,406	2026-07-18 10:52:50
27.101.168.0/24	7,905	2026-07-18 10:52:07
27.101.18.0/24	7,745	2026-07-18 10:52:10
27.101.19.0/24	7,727	2026-07-18 10:52:10
27.101.44.0/24	7,698	2026-07-18 10:52:10
27.101.43.0/24	7,692	2026-07-18 10:52:10
27.101.40.0/24	7,669	2026-07-18 10:52:10
27.101.21.0/24	7,668	2026-07-18 10:52:10
27.101.13.0/24	7,651	2026-07-18 10:52:10
27.101.42.0/24	7,649	2026-07-18 10:52:10
27.101.41.0/24	7,646	2026-07-18 10:52:10
27.101.20.0/24	7,636	2026-07-18 10:52:10
27.101.16.0/24	7,595	2026-07-18 10:52:10

Showing top 50 of 736 announced prefixes by sample volume.

Frequently Asked Questions

What is AS17841?

AS17841 is an Autonomous System Number assigned to NATIONAL INFORMATION RESOURCES SERVICE. An ASN identifies a network that controls a specific set of IP addresses and determines how traffic is routed across the internet via BGP (Border Gateway Protocol).

How many IP addresses does AS17841 announce?

AS17841 announces 227.3K IPv4 addresses distributed across 88 routed CIDR prefixes. The network is registered in South Korea.

Who operates AS17841?

AS17841 is operated by NATIONAL INFORMATION RESOURCES SERVICE. The organization is based in South Korea. You can view all IP ranges and related ASNs on the organization page.

What country is AS17841 registered in?

AS17841 is registered in South Korea. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.

Last updated: 2026-07-18 11:25:31 UTC