cogentco.com SPF record

10 / 10 Lookups
0 Issues
3,853 IPv4 addresses
4 IPv6 addresses
v=spf1 mx a:engtools.sys.cogentco.com a:mx1.cogentco.com a:mx2.cogentco.com a:mx3.cogentco.com a:mx4.cogentco.com a:mx5.cogentco.com include:cvent-planner.com include:_spf.act-on.net ~all Copied

Terms

mx
pass if the sender's IP address is in the A or AAAA record of this domain.
4 IPv4 addresses
4 IPv6 addresses
or else
pass if the sender's IP address is in the A or AAAA record of this domain.
1 IPv4 address
or else
pass if the sender's IP address is in the A or AAAA record of this domain.
1 IPv4 address
or else
pass if the sender's IP address is in the A or AAAA record of this domain.
1 IPv4 address
or else
pass if the sender's IP address is in the A or AAAA record of this domain.
1 IPv4 address
or else
pass if the sender's IP address is in the A or AAAA record of this domain.
1 IPv4 address
or else
pass if the sender's IP address is in the A or AAAA record of this domain.
1 IPv4 address
or else
Evaluate this SPF record and pass if it
passes.
or else
Evaluate this SPF record and pass if it
passes.
or else
~all
soft fail the email's SPF check.

Included records

v=spf1 mx a:engtools.sys.cogentco.com a:mx1.cogentco.com a:mx2.cogentco.com a:mx3.cogentco.com a:mx4.cogentco.com a:mx5.cogentco.com include:cvent-planner.com include:_spf.act-on.net ~all
3 x ip4 ~all
include:_netblocks.act-on.net -all
10 x ip4 -all

IP ranges

Microsoft
AS8075
Microsoft
AS8075
Microsoft
AS8075
Microsoft
AS8075
Microsoft
AS8075
Microsoft
AS8075
Microsoft
AS8075
Microsoft
AS8075
Cogent Communications
AS174
Cogent Communications
AS174
Cogent Communications
AS174
Cogent Communications
AS174
Cogent Communications
AS174
Cogent Communications
AS174
Amazon.com
AS16509
Amazon.com
AS16509
Amazon.com
AS14618
Equinix (EMEA) Acquisition Enterprises
AS15830
Equinix (EMEA) Acquisition Enterprises
AS15830
Equinix (EMEA) Acquisition Enterprises
AS15830
Equinix (EMEA) Acquisition Enterprises
AS15830
Equinix (EMEA) Acquisition Enterprises
AS15830
Amazon.com
AS16509
Amazon.com
AS16509
Amazon.com
AS16509