Blocking an Individual IP Address
You can choose to block IP addresses one at a time or block a range of IP addresses. You can enter the process of blocking IP addresses from the individual order review pages or from the IP Blocking page accessible within Risk Tools. The IP Block List is limited to a maximum of 100 entries that may consist of either single IP addresses or ranges of IP addresses.
To block an individual IP address coming from the Order Manager:
- From the individual order review page, click the IP address link appearing below the order number (see figure 1).
- Click the "Lookup" button to get reverse DNS lookup information for the IP address. You can also click the "see complete whois information" link to get all available information for the IP address from the registrar.
- If you believe the order is fraudulent and you wish to block further orders from the IP address, click the "Add" button. (The IP address now appears in the IP Block List).
- Click "Done".
Visitors from the IP address blocked will no longer be allowed to enter the checkout process for your store.
To block an individual IP address from the IP Blocking page:
- From the Store Manager, click the "Risk Tools" link appearing in the Order Settings column.
- Click the "IP Blocking" link.
- Enter the IP address you wish to add to the IP Address field. (For example, 216.109.112.135).
- Click the "Lookup" button to get reverse DNS lookup information for the IP address. You can also click the "see complete whois information" link to get all available information for the IP address from the registrar.
- If you believe the order is fraudulent and you wish to block further orders from the IP address, click the "Add" button. (The IP address now appears in the IP Block List).
- Click "Done".
You can also enter up to ten IP addresses (or ranges) to be added at one time, however you can only lookup IP address information one at a time. We strongly recommend reviewing reverse DNS lookup information along with the order information for possible signs of fraud for each IP address (or range) you wish to add so you do not block legitimate buyers by mistake. You will only be able to tell if legitimate buyers are blocked if they contact you after seeing checkout not available error page. You can then decide whether to remove the IP address from the IP Block List or process the order manually.
| Note: Yahoo! provides the IP address blocking feature as is and without warranty of any kind to Yahoo! Merchant Solutions and Store merchants to be used at the merchants' discretion. Merchants should carefully review the Reverse DNS Lookup information provided before blocking any IP address, as IP addresses may be dynamically assigned to users by certain Internet Service Providers possibly blocking legitimate buyers and not ensuring the fraudster is blocked from ordering. Also, as IP addresses may be falsified, merchants are advised to use AVS and CVV responses to determine which orders to approve, reject, or follow up with the issuing bank. |
See Also
- IP Blocking Overview
- Blocking a Range of IP Addresses
- Removing an IP Address from the Block List
- What is an IP Address?
- What is CIDR?
- What will a customer see coming from a Blocked IP?
- How do I lookup information for an IP Address from a suspicious order?
- What are the signs of a suspect order?
- Can IP Addresses be spoofed or falsified?
- Is there a limit to the number of entries in the IP Block List?