1.240.0.0/13

Currently announced by AS9318 SK Broadband, in the routed prefix 1.240.0.0/13.

Current ASN: AS9318; SK Broadband
Routed prefix: 1.240.0.0/13; Most specific route covering this prefix
ASNs over time: 1; 2 announcement records
RIR allocation: APNIC; South Korea · 1.240.0.0/12

Routing data · Nov 8, 2026, 10:26 UTC

ASN historyEvery routed prefix covering 1.240.0.0/13

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
1.240.0.0/13	AS9318	SK Broadband	South Korea	Before monitoring	2026-11-08 10:26	Announcing
1.224.0.0/11	AS9318	SK Broadband	South Korea	Before monitoring	2026-11-08 10:26	Announcing

More specific routes39 total

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
1.240.0.0/24	AS38415	Guri Namyangju Office Of Education	South Korea	Before monitoring	2026-11-08 10:26	Announcing
1.240.224.0/23	AS9318	SK Broadband	South Korea	Before monitoring	2026-11-08 10:26	Announcing
1.241.0.0/24	AS38408	GYEONGGI PROVINCIAL ANYANG OFFICE OF EDUCATION	South Korea	Before monitoring	2026-11-08 10:26	Announcing
1.241.1.0/24	AS38408	GYEONGGI PROVINCIAL ANYANG OFFICE OF EDUCATION	South Korea	Before monitoring	2026-11-08 10:26	Announcing
1.241.2.0/24	AS38403	GunpoUiwang Office of Education	South Korea	Before monitoring	2026-11-08 10:26	Announcing
1.241.3.0/24	AS38403	GunpoUiwang Office of Education	South Korea	Before monitoring	2026-11-08 10:26	Announcing
1.241.69.0/24	AS131093	viva republica	South Korea	2026-11-06 14:26	2026-11-08 10:26	Announcing
1.241.193.0/24	AS131802	NongHyup Life Insurance	South Korea	Before monitoring	2026-11-08 10:26	Announcing
1.241.229.0/24	AS9638	National Agricultural Cooperative federation	South Korea	Before monitoring	2026-11-08 10:26	Announcing
1.241.248.0/24	AS9638	National Agricultural Cooperative federation	South Korea	Before monitoring	2026-11-08 10:26	Announcing
1.241.251.0/24	AS9766	SHINHAN LIFE INSURANCE CO.,LTD.	South Korea	Before monitoring	2026-11-08 10:26	Announcing
1.242.4.0/24	AS38407	Gyeonggi-Do Ansan Office of Education	South Korea	Before monitoring	2026-11-08 10:26	Announcing
1.242.5.0/24	AS38407	Gyeonggi-Do Ansan Office of Education	South Korea	Before monitoring	2026-11-08 10:26	Announcing
1.242.7.0/24	AS38414	Gyeonggi siheung office of education	South Korea	Before monitoring	2026-11-08 10:26	Announcing
1.242.180.0/24	AS9318	SK Broadband	South Korea	Before monitoring	2026-11-08 10:26	Announcing
1.242.181.0/24	AS9318	SK Broadband	South Korea	Before monitoring	2026-11-08 10:26	Announcing
1.242.182.0/24	AS9318	SK Broadband	South Korea	Before monitoring	2026-11-08 10:26	Announcing
1.242.183.0/24	AS9318	SK Broadband	South Korea	Before monitoring	2026-11-08 10:26	Announcing
1.242.185.0/24	AS9318	SK Broadband	South Korea	Before monitoring	2026-11-08 10:26	Announcing
1.242.194.0/24	AS9318	SK Broadband	South Korea	Before monitoring	2026-11-08 10:26	Announcing
1.242.195.0/24	AS9318	SK Broadband	South Korea	Before monitoring	2026-11-08 10:26	Announcing
1.242.211.0/24	AS9318	SK Broadband	South Korea	Before monitoring	2026-11-08 10:26	Announcing
1.242.247.0/24	AS9318	SK Broadband	South Korea	Before monitoring	2026-11-08 10:26	Announcing
1.244.114.0/24	AS55615	DOUZONEBIZON	South Korea	Before monitoring	2026-11-08 10:26	Announcing
1.244.115.0/24	AS55615	DOUZONEBIZON	South Korea	Before monitoring	2026-11-08 10:26	Announcing
1.244.116.0/24	AS55615	DOUZONEBIZON	South Korea	Before monitoring	2026-11-08 10:26	Announcing
1.244.117.0/24	AS55615	DOUZONEBIZON	South Korea	Before monitoring	2026-11-08 10:26	Announcing
1.244.118.0/24	AS55615	DOUZONEBIZON	South Korea	Before monitoring	2026-11-08 10:26	Announcing
1.244.192.0/24	AS55615	DOUZONEBIZON	South Korea	Before monitoring	2026-11-08 10:26	Announcing
1.244.193.0/24	AS55615	DOUZONEBIZON	South Korea	Before monitoring	2026-11-08 10:26	Announcing
1.244.194.0/24	AS55615	DOUZONEBIZON	South Korea	Before monitoring	2026-11-08 10:26	Announcing
1.245.49.0/24	AS9523	Mokwon University	South Korea	Before monitoring	2026-11-08 10:26	Announcing
1.245.50.0/24	AS9523	Mokwon University	South Korea	Before monitoring	2026-11-08 10:26	Announcing
1.247.4.0/24	AS63199	CDS Global Cloud Co., LTD	United States	Before monitoring	2026-11-08 10:26	Announcing
1.247.193.0/24	AS55625	Chungwoon University	South Korea	Before monitoring	2026-11-08 10:26	Announcing
1.247.194.0/23	AS55625	Chungwoon University	South Korea	Before monitoring	2026-11-08 10:26	Announcing
1.247.196.0/22	AS55625	Chungwoon University	South Korea	Before monitoring	2026-11-08 10:26	Announcing
1.247.200.0/23	AS55625	Chungwoon University	South Korea	Before monitoring	2026-11-08 10:26	Announcing
1.247.202.0/24	AS55625	Chungwoon University	South Korea	Before monitoring	2026-11-08 10:26	Announcing

Change logAll changes

The routes covering this address have had no origin changes since ASNBase started monitoring.

Look up another address

RIR allocation record

Registry: APNIC
Allocated block: 1.240.0.0/12
Country: South Korea
Allocation date: 2010-07-19
Status: allocated

From the RIRs’ delegated statistics files. Shows where the addresses are registered, not where they are used.

How monitoring works

Every 2 hours ASNBase takes the bgp.tools global routing table (prefix → origin ASN) and compares it with the previous one. The detected time is the time of that comparison; the actual change can be up to about 2 hours earlier.
Only routes seen by more than 100 bgp.tools peers are listed as changes; routes with less visibility are only kept in the history.
A new announcement counts only if it is still in the next routing table, and a withdrawal only if the prefix is missing from two tables in a row, so short flaps are ignored.
ASNBase has been monitoring since 2026-10-19. “Before monitoring” under “First seen” means the route was already announced when monitoring started; the earlier date is unknown.
Prefixes first seen during the first day of monitoring do not count as new announcements: most of them were simply missing from the table at the moment monitoring started.
Countries and regions follow the ASN’s registration, not the actual location of the IP addresses.