stamp.nttnavi.co.jp SPF record

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128 IPv4 addresses
0 IPv6 addresses
v=spf1 ip4:202.234.199.128/25 -all Copied

Terms

ip4:
202.234.199.128 / 25
pass if the sender's IP is between
202.234.199.128 and 202.234.199.255 (inclusive).
NTT DOCOMO BUSINESS
AS4713
or else
-all
fail the email's SPF check.

Included records

v=spf1 ip4:202.234.199.128/25 -all

IP ranges

NTT DOCOMO BUSINESS
AS4713