1.248.0.0/13

Currently announced by AS9318 SK Broadband, in the routed prefix 1.248.0.0/13.

Current ASN: AS9318; SK Broadband
Routed prefix: 1.248.0.0/13; 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 1.248.0.0/13

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
1.248.0.0/13	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 routes37 total

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
1.248.68.0/24	AS152282	National Fire Hospital	South Korea	Before monitoring	2026-11-08 10:26	Announcing
1.248.219.0/24	AS38688	GSNeotek	South Korea	Before monitoring	2026-11-08 10:26	Announcing
1.249.52.0/24	AS9318	SK Broadband	South Korea	Before monitoring	2026-11-08 10:26	Announcing
1.249.83.0/24	AS9318	SK Broadband	South Korea	Before monitoring	2026-11-08 10:26	Announcing
1.249.108.0/23	AS9318	SK Broadband	South Korea	Before monitoring	2026-11-08 10:26	Announcing
1.249.108.0/24	AS10062	Branksome Hall Asia	South Korea	Before monitoring	2026-11-08 10:26	Announcing
1.250.154.0/23	AS9318	SK Broadband	South Korea	Before monitoring	2026-11-08 10:26	Announcing
1.252.186.0/24	AS38112	Korea Housing Urban Guarantee Corporation	South Korea	Before monitoring	2026-11-08 10:26	Announcing
1.254.228.0/24	AS9526	KOSCOM	South Korea	Before monitoring	2026-11-08 10:26	Announcing
1.254.241.0/24	AS9318	SK Broadband	South Korea	Before monitoring	2026-11-08 10:26	Announcing
1.255.3.0/24	AS23594	YKK KOREA CO., LTD.	South Korea	Before monitoring	2026-11-08 10:26	Announcing
1.255.6.0/24	AS38389	FAMOUS WORKER	South Korea	Before monitoring	2026-11-08 10:26	Announcing
1.255.30.0/24	AS63199	CDS Global Cloud Co., LTD	United States	Before monitoring	2026-11-08 10:26	Announcing
1.255.42.0/24	AS9318	SK Broadband	South Korea	Before monitoring	2026-11-08 10:26	Announcing
1.255.48.0/22	AS23576	NAVER	South Korea	Before monitoring	2026-11-08 10:26	Announcing
1.255.48.0/23	AS23576	NAVER	South Korea	Before monitoring	2026-11-08 10:26	Announcing
1.255.50.0/23	AS23576	NAVER	South Korea	Before monitoring	2026-11-08 10:26	Announcing
1.255.52.0/22	AS23576	NAVER	South Korea	Before monitoring	2026-11-08 10:26	Announcing
1.255.52.0/23	AS23576	NAVER	South Korea	Before monitoring	2026-11-08 10:26	Announcing
1.255.54.0/23	AS23576	NAVER	South Korea	Before monitoring	2026-11-08 10:26	Announcing
1.255.56.0/22	AS23576	NAVER	South Korea	Before monitoring	2026-11-08 10:26	Announcing
1.255.56.0/23	AS23576	NAVER	South Korea	Before monitoring	2026-11-08 10:26	Announcing
1.255.58.0/23	AS23576	NAVER	South Korea	Before monitoring	2026-11-08 10:26	Announcing
1.255.60.0/22	AS23576	NAVER	South Korea	Before monitoring	2026-11-08 10:26	Announcing
1.255.60.0/23	AS23576	NAVER	South Korea	Before monitoring	2026-11-08 10:26	Announcing
1.255.62.0/23	AS23576	NAVER	South Korea	Before monitoring	2026-11-08 10:26	Announcing
1.255.75.0/24	AS9638	National Agricultural Cooperative federation	South Korea	Before monitoring	2026-11-08 10:26	Announcing
1.255.76.0/24	AS9318	SK Broadband	South Korea	Before monitoring	2026-11-08 10:26	Announcing
1.255.77.0/24	AS9638	National Agricultural Cooperative federation	South Korea	Before monitoring	2026-11-08 10:26	Announcing
1.255.78.0/24	AS9638	National Agricultural Cooperative federation	South Korea	Before monitoring	2026-11-08 10:26	Announcing
1.255.101.0/24	AS9318	SK Broadband	South Korea	Before monitoring	2026-11-08 10:26	Announcing
1.255.123.0/24	AS9770	SPEEDONSTV	South Korea	Before monitoring	2026-11-08 10:26	Announcing
1.255.124.0/24	AS9770	SPEEDONSTV	South Korea	Before monitoring	2026-11-08 10:26	Announcing
1.255.125.0/24	AS9770	SPEEDONSTV	South Korea	Before monitoring	2026-11-08 10:26	Announcing
1.255.126.0/24	AS9770	SPEEDONSTV	South Korea	Before monitoring	2026-11-08 10:26	Announcing
1.255.127.0/24	AS9704	Korea Investment Trust Management Securities Co.,LTD	South Korea	Before monitoring	2026-11-08 10:26	Announcing
1.255.227.0/24	AS9860	National Health Insurance Service	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.

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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.