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IPv4 Exhaustion

The RIPE NCC will reach the last /8 of IPv4 address space in the coming months.

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  • All of our services are operating normally.

Contact us by email

For media enquiries please contact: Alex Bishop at Racepoint Group
Tel: +44 208 752 3200 | Email: ripencc _at_ racepointgroup _dot_ com

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RIPE Database

Greylisting

The RIPE NCC uses greylisting on its mail servers in order to reduce the amount of spam recieved.

Greylisting works by sending a temporary SMTP error the first time an email is received from an unknown sender. Any legitimate mail servers that receive this error will resend the email successfully. The bulk mailers used by spammers do not usually try to resend email that is returned and so the spam is blocked on the first and only attempt at delivery.

Legitimate emails to the RIPE NCC should not be affected by greylisting. However, if you have any problem sending email, please contact ops _at_ ripe _dot_ net.