How to remove your IP from Korea Services (korea.services.net)

A blunt, allocation-based list of Korean network space. Here is what a listing means and the realistic ways off it.

Check your domain free → Korea Services (korea.services.net) removal tool ↗

What it is

The list, in plain terms.

korea.services.net, published as The South Korean Network Blocking List, is a DNS blocklist that lists IPv4 addresses by allocation rather than by what they have sent. It carries most of the address space APNIC assigned to Korea, plus a number of older ARIN ranges with a history of sending spam. It lists whole networks, not individual machines.

It began in late 2001 as a deliberately broad response to spam from Korean networks whose operators did not act on abuse reports. Because it blocks by allocation, an IP can be listed purely for sitting inside Korean space, regardless of whether that specific server has ever sent a single spam message.

It is a legacy, geographically blunt list that the major mailbox providers do not consult. A listing only affects you if a receiver you send to has chosen to enable this specific zone. Confirm from the bounce message that korea.services.net is the list rejecting your mail before you spend any time on it.

Why you get listed

What a listing on Korea Services (korea.services.net) means.

Korean APNIC allocation Your IP sits in address space APNIC allocated to Korea, and the list covers most of that space by default. The listing reflects where the IP is allocated, not what it has sent — clean servers in Korean ranges are listed alongside everything else.

ARIN range with spam history Some older, non-Korean ranges are included where they have a documented history of sending spam. If a range outside Korea is listed, this is the usual reason.

Unresolved network abuse The network hosting the IP has open relays or proxies, ongoing spam, or no working way to handle abuse reports. The range stays listed until the operator resolves that.

How to get removed

Delisting, in order.

Removal is free. Fix the cause first — a listing you clear without a fix comes straight back.

1 Confirm this is the list rejecting you. Read the bounce. A rejection names the blocklist zone it consulted. Only act if korea.services.net is the zone cited — being listed here has no effect on the many receivers who do not use it.
2 Look the IP up on the list's own page. Query the address at korea.services.net to confirm it is listed and see the reason recorded against it. Because removal is decided at the network level, use this to identify which range the IP belongs to and who controls it.
3 Fix the cause at the network level. This is not per-IP self-service. The operator of the range has to stop the spam, close any open relays or proxies, and put working abuse-handling in place. A single sender inside a listed Korean allocation cannot clear the listing on their own.
4 Have the range operator request removal. Once the network is clean, the operator requests removal through the list's own site. The maintainer removes ranges as they demonstrate the abuse is resolved. There is no paid tier and no fast-track — anyone charging to delist you here is running a scam.
5 Route around it while you wait. If a network-wide delisting is not realistic quickly, send through an authenticated relay or a sending IP outside the listed space, or ask the specific receiver blocking you to stop querying this zone.

The official route

Straight to the source.

Removal happens on Korea Services (korea.services.net)'s own tool — never through a paid service.

Korea Services (korea.services.net) removal tool ↗

Return codes

127.0.0.2 Listed — the IP is in a blocked Korean allocation or a spam-history range

Common questions

About Korea Services (korea.services.net), specifically.

Why is my IP on korea.services.net when it has never sent spam? Because the list works by allocation, not behaviour. It covers most Korean APNIC space wholesale, so an IP is listed for where it sits. Your own sending history does not change that — the range itself has to be delisted.

How do I remove my IP from korea.services.net? There is no per-IP self-removal. The operator of the network the IP belongs to must resolve the abuse and request removal of the range through korea.services.net. If you are one sender inside that range, raise it with your hosting or connectivity provider.

Does removal cost anything? No. Removal is free and handled by the list maintainer. Any service charging a fee to delist you from this list is a scam; no third party can influence or speed up the decision.

It only blocks mail to one recipient — what should I do? This is a niche list that few receivers enforce. The quickest fix is usually to ask that receiver to stop querying korea.services.net, or to send from an IP outside the listed range, rather than waiting on a network-wide delisting.

Is korea.services.net still active? The zone is still published and monitoring services still track it, but it is a legacy, geographically blunt list that the major providers ignore. Treat a listing here as low priority unless a receiver you depend on specifically enforces it.

How can I tell it is this list and not another? Check the reject text in the bounce or run a multi-list lookup. The rejecting server names the zone, and korea.services.net returns 127.0.0.2 when the queried IP is listed.

The bounce behind the listing.

554 5.7.1 message rejected → The permanent bounce a listing most often triggers — what it means and how to clear it. 550 5.7.1 blocked → A rejection on reputation grounds — usually the same listing, seen from the sender side. Blacklist checker → Re-check your domain and every sending IP once the cause is fixed.

Do not fix it blind.

See every list you are on and every authentication problem behind the listing in one 40-second check — then let monitoring tell you the day a listing comes back.

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