Tools · Reputation

IP blacklist check (DNSBL)

We check the address against public DNSBL zones and report clean, listed, or unavailable. This is not a trust score. It is a snapshot of what the lists answer now.

Detecting…

We check the address used by this connection. There is nothing to enter.

This page asks public DNSBL zones about one address. Mail gateways and anti-spam systems use these lists when judging traffic. A zone can answer clean, listed, or unavailable. We do not turn those answers into a trust percentage because the lists do not provide one.

What to do when an address is listed

A listing is one operator's signal, not a legal verdict. Read the category first. Spamhaus PBL often means that the range should not send mail directly, while XBL or CSS points to compromise or abusive sending. The category tells you whether to use a mail relay, inspect the host, contact the operator, or change the exit address.

  1. 01

    Read the category, not only the status

    A provider policy and a botnet both appear as listed, but they need different fixes. PBL is often resolved by sending through a mail relay. Botnet, malware, and open-proxy categories mean the host itself needs attention.

  2. 02

    Use the blacklist operator's removal page

    The removal link goes to the zone operator, not Top Proxy. Each operator sets its own timing and conditions. Some remove an address after traffic stops, while others keep a range listed for days or weeks.

  3. 03

    Recheck a proxy before paying for it

    One result does not cover a rotating pool. The next request may leave through another address. Test another exit and see whether the listing follows the service or only one address.

How this differs from the proxy checker

The tools answer different questions. This page explains the reputation of one address: your own, another IP, or a proxy exit. The proxy checker takes a list and reports whether each proxy works, which protocol it uses, whether it leaks your address, and which selected sites it reaches.

current tool

This page checks one address

  • Each listing includes its category, explanation, and removal link
  • Every zone reports listed, clean, or unavailable
  • Check your address, another IP, or one proxy exit
  • Useful when mail is rejected or sites challenge an address
another tool

The proxy checker handles a list

  • Test up to 10,000 proxies in one run
  • Blacklists are one compact result column
  • Also tests protocol, latency, anonymity, and reachability
Check a proxy list

Why check an address before using it

A provider may call an address clean, but mail gateways and anti-abuse systems look at public lists. An individual IP listed by UCEPROTECT Level 1, or an address covered by Spamhaus PBL policy, can still trigger quarantine and captchas even when the connection works.

Reused addresses may already be listed

An address can carry the previous user's reputation. Check the exact exit before relying on it for mail or automation.

Residential proxies are not available in English yet

Shared mobile exits need context

Many subscribers can share one carrier address. Some lists account for that, while individual sites may still challenge the traffic.

Mobile proxy listings are not available in English yet

A neighbouring host can affect the range

Some operators list a larger network block. Compare all responding zones before deciding that the checked host caused the listing.

Country listings are not available in English yet

Before acting on a listing, check the address, country, ASN, and connection details together. Start with My IP to see the address and network information a site can observe now.

Frequently asked questions

It queries public DNSBL zones for one address: your current connection, an IP literal you enter, or the exit address of a proxy. Each zone reports clean, listed, or unavailable. Listings include the category and the operator's removal page when available. The result is a current snapshot, not a prediction that tomorrow's email will arrive.

Clean means the zone answered and does not hold the address. Unavailable means the zone did not confirm a result because of a timeout, DNS failure, or service response. Silence is not a clean answer, so the result keeps unavailable zones separate.

No. The address is used only to query the zones for this request and show the result on screen. It is not written into the page title, Open Graph data, or JSON-LD, and reports are not retained. Rate limiting counts calls from a connection without storing the checked report.

dnsbl-1.uceprotect.net Level 1 lists individual IP addresses that the operator has associated with abusive traffic. It does not list a whole allocation: UCEPROTECT Level 2 is the separate list for networks with too many Level 1 entries. Treat a Level 1 hit as a signal about the checked address, then use the operator's evidence and removal guidance.

No. This tool explains the DNSBL status of one address. The proxy checker accepts a list and tests liveness, protocol, anonymity, location, and access to selected sites. Its blacklist column is a compact status without listing categories. Use the proxy checker when you need to test many proxies.

No. We show what each zone answered and link to the operator's removal page. The operator sets the request process, timing, and conditions. Top Proxy does not charge for removal or promise that a listing will disappear.

Yes, if you enter an IP literal rather than a host name. Zones that support IPv6 apply their normal rules. A zone without IPv6 support reports unavailable, not clean. The My address tab uses the address that opened this page.

How the check works

We query 10 public DNSBL zones using the reverse-address lookups used by mail systems. A normal answer in 127.0.0.0/8 is a listing, with a category when the zone encodes one. NXDOMAIN means clean for that zone. A timeout, SERVFAIL, REFUSED, or a Spamhaus 127.255.255.0/24 service code is unavailable, not clean.

The query

A standard DNS lookup sends the reversed address to each blacklist zone. Top Proxy does not maintain the lists.

Listing category

An answer in 127.0.0.0/8 is interpreted using that operator's codes. Spamhaus categories include SBL, CSS, XBL, and PBL.

Number of lists

10 public lists. Independent operators maintain them and decide whether to remove an address.

What we do not do

We do not calculate a trust score or retain the checked address and report.

The “10 blacklists queried” line comes from the configured zone set, not a marketing estimate. Unanswered zones stay unavailable instead of becoming green checks. The address and report live only for the current request. The page title, Open Graph data, and JSON-LD never contain the visitor's IP.

A note on dnsbl-1.uceprotect.net: Level 1 reports individual IP addresses associated with abusive traffic. UCEPROTECT Level 2, which this tool does not query, is the separate allocation-level list. Use the Level 1 operator record to investigate the checked address.

Need to inspect another address?

Check another IP or proxy exit above. English catalog categories are not public yet, so this page does not send you into the Russian catalog.

English proxy catalog is not available yet