frontier.com SPF record

Queried just now

12 / 10 Lookups

2 Issues

272,576 IPv4 addresses

1.42 ⋅ 10 ²² IPv6 addresses

There are 2 issues with this SPF record

More than 10 DNS lookups were required to process this SPF record.
The 'ptr' mechanism shouldn't be used because it's slow, resource intensive, and not very reliable.


                              v=spf1 include:_spf.frontier.com include:_spf.mail.yahoo.com include:sendgrid.net include:mktomail.com include:icpbounce.com include:spf-0019f703.pphosted.com include:_netblocks.act-on.net ip4:44.238.97.35 ~all

Copied

Terms

include:

_spf.frontier.com

Evaluate this SPF record and pass if it

passes.

or else

include:

_spf.mail.yahoo.com

Evaluate this SPF record and pass if it

passes.

or else

include:

Evaluate this SPF record and pass if it

passes.

SendGrid

Email automation

or else

include:

Evaluate this SPF record and pass if it

passes.

Marketo

Marketing automation

or else

include:

Evaluate this SPF record and pass if it

passes.

or else

include:

spf-0019f703.pphosted.com

Evaluate this SPF record and pass if it

passes.

or else

include:

_netblocks.act-on.net

Evaluate this SPF record and pass if it

passes.

or else

ip4:

44.238.97.35 / 32

pass if the sender's IP is between
44.238.97.35 and 44.238.97.35 (inclusive).

Amazon.com

AS16509

or else

~all

soft fail the email's SPF check.

Included records

v=spf1 include:_spf.frontier.com include:_spf.mail.yahoo.com include:sendgrid.net include:mktomail.com include:icpbounce.com include:spf-0019f703.pphosted.com include:_netblocks.act-on.net ip4:44.238.97.35 ~all

More than 10 DNS lookups were required to process this SPF record

_spf.frontier.com

15 x ip4 3 x ip6 ~all

_spf.mail.yahoo.com

ptr:yahoo.com ptr:yahoo.net 18 x ip4 ?all

The 'ptr' mechanism shouldn't be used because it's slow, resource intensive, and not very reliable

11 x ip4 include:ab.sendgrid.net ~all

ab.sendgrid.net

4 x ip4 ~all

12 x ip4 ~all

14 x ip4 a mx -all

spf-0019f703.pphosted.com

2 x ip4

_netblocks.act-on.net

10 x ip4 -all

IP ranges

66.133.129.0 / 24

Frontier Communications of America

AS5650

66.133.129.0 - 66.133.129.255

256 IP addresses

66.133.182.0 / 23

Frontier Communications of America

AS5650

66.133.182.0 - 66.133.183.255

512 IP addresses

66.133.186.0 / 24

Frontier Communications of America

AS5650

66.133.186.0 - 66.133.186.255

256 IP addresses

66.133.130.48 / 28

Frontier Communications of America

AS5650

66.133.130.48 - 66.133.130.63

16 IP addresses

199.224.80.192 / 26

Frontier Communications of America

AS3593

199.224.80.192 - 199.224.80.255

64 IP addresses

184.16.11.128 / 25

Frontier Communications of America

AS5650

184.16.11.128 - 184.16.11.255

128 IP addresses

184.16.18.160 / 28

Frontier Communications of America

AS5650

184.16.18.160 - 184.16.18.175

16 IP addresses

50.48.212.0 / 22

Frontier Communications of America

AS5650

50.48.212.0 - 50.48.215.255

1,024 IP addresses

2001:1960:20:: / 56

Frontier Communications of America

AS5650

2001:1960:20::

2001:1960:20:ff:ffff:ffff:ffff:ffff

2001:1960:20:6000:: / 56

Frontier Communications of America

AS5650

2001:1960:20:6000::

2001:1960:20:60ff:ffff:ffff:ffff:ffff

2001:1960:20:1000:: / 56

Frontier Communications of America

AS5650

2001:1960:20:1000::

2001:1960:20:10ff:ffff:ffff:ffff:ffff

50.121.75.12 / 30

Frontier Communications of America

AS32587

50.121.75.12 - 50.121.75.15

4 IP addresses

50.121.72.36 / 30

Frontier Communications of America

AS32587

50.121.72.36 - 50.121.72.39

4 IP addresses

Amazon.com

AS14618

67.228.27.194 / 31

IBM Cloud

AS36351

67.228.27.194 - 67.228.27.195

2 IP addresses

198.176.184.183

DST Systems

AS14792

108.168.134.201

IBM Cloud

AS36351

GoDaddy.com

AS398101

34.2.71.64 / 26

Google

AS15169

34.2.71.64 - 34.2.71.127

64 IP addresses

34.2.75.0 / 26

Google

AS15169

34.2.75.0 - 34.2.75.63

64 IP addresses

34.2.84.64 / 26

Google

AS15169

34.2.84.64 - 34.2.84.127

64 IP addresses

34.2.85.64 / 26

Google

AS15169

34.2.85.64 - 34.2.85.127

64 IP addresses

34.2.64.0 / 22

Google

AS15169

34.2.64.0 - 34.2.67.255

1,024 IP addresses

34.2.68.0 / 23

Google

AS15169

34.2.68.0 - 34.2.69.255

512 IP addresses

34.2.70.0 / 23

Google

AS15169

34.2.70.0 - 34.2.71.255

512 IP addresses

34.2.72.0 / 22

Google

AS15169

34.2.72.0 - 34.2.75.255

1,024 IP addresses

34.2.78.0 / 23

Google

AS15169

34.2.78.0 - 34.2.79.255

512 IP addresses

34.2.80.0 / 23

Google

AS15169

34.2.80.0 - 34.2.81.255

512 IP addresses

34.2.82.0 / 23

Google

AS15169

34.2.82.0 - 34.2.83.255

512 IP addresses

34.2.84.0 / 24

Google

AS15169

34.2.84.0 - 34.2.84.255

256 IP addresses

34.2.86.0 / 23

Google

AS15169

34.2.86.0 - 34.2.87.255

512 IP addresses

34.2.88.0 / 23

Google

AS15169

34.2.88.0 - 34.2.89.255

512 IP addresses

34.2.90.0 / 23

Google

AS15169

34.2.90.0 - 34.2.91.255

512 IP addresses

34.2.92.0 / 23

Google

AS15169

34.2.92.0 - 34.2.93.255

512 IP addresses

34.2.85.0 / 24

Google

AS15169

34.2.85.0 - 34.2.85.255

256 IP addresses

34.2.94.0 / 23

Google

AS15169

34.2.94.0 - 34.2.95.255

512 IP addresses

167.89.0.0 / 17

SendGrid

AS11377

167.89.0.0 - 167.89.127.255

32,768 IP addresses

208.117.48.0 / 20

SendGrid

AS11377

208.117.48.0 - 208.117.63.255

4,096 IP addresses

50.31.32.0 / 19

SendGrid

AS11377

50.31.32.0 - 50.31.63.255

8,192 IP addresses

198.37.144.0 / 20

SendGrid

AS11377

198.37.144.0 - 198.37.159.255

4,096 IP addresses

198.21.0.0 / 21

SendGrid

AS11377

198.21.0.0 - 198.21.7.255

2,048 IP addresses

192.254.112.0 / 20

SendGrid

AS11377

192.254.112.0 - 192.254.127.255

4,096 IP addresses

168.245.0.0 / 17

SendGrid

AS11377

168.245.0.0 - 168.245.127.255

32,768 IP addresses

149.72.0.0 / 16

Amazon.com

AS14618

149.72.0.0 - 149.72.255.255

65,536 IP addresses

159.183.0.0 / 16

SendGrid

AS11377

159.183.0.0 - 159.183.255.255

65,536 IP addresses

134.128.64.0 / 19

SendGrid

AS11377

134.128.64.0 - 134.128.95.255

8,192 IP addresses

134.128.96.0 / 19

SendGrid

AS11377

134.128.96.0 - 134.128.127.255

8,192 IP addresses

223.165.113.0 / 24

SendGrid

AS11377

223.165.113.0 - 223.165.113.255

256 IP addresses

223.165.115.0 / 24

SendGrid

AS11377

223.165.115.0 - 223.165.115.255

256 IP addresses

223.165.118.0 / 23

SendGrid

AS11377

223.165.118.0 - 223.165.119.255

512 IP addresses

223.165.120.0 / 23

SendGrid

AS11377

223.165.120.0 - 223.165.121.255

512 IP addresses

199.15.212.0 / 22

Adobe

AS15224

199.15.212.0 - 199.15.215.255

1,024 IP addresses

72.3.185.0 / 24

Rackspace Hosting

AS33070

72.3.185.0 - 72.3.185.255

256 IP addresses

72.32.154.0 / 24

Rackspace Hosting

AS33070

72.32.154.0 - 72.32.154.255

256 IP addresses

72.32.217.0 / 24

Rackspace Hosting

AS33070

72.32.217.0 - 72.32.217.255

256 IP addresses

72.32.243.0 / 24

Rackspace Hosting

AS33070

72.32.243.0 - 72.32.243.255

256 IP addresses

94.236.119.0 / 26

Rackspace

AS15395

94.236.119.0 - 94.236.119.63

64 IP addresses

Rackspace

AS15395

185.28.196.0 / 22

Adobe

AS15224

185.28.196.0 - 185.28.199.255

1,024 IP addresses

192.28.128.0 / 18

Lockheed Martin

AS6075

192.28.128.0 - 192.28.191.255

16,384 IP addresses

103.237.104.0 / 22

MARKETO

AS53580

103.237.104.0 - 103.237.107.255

1,024 IP addresses

130.248.172.0 / 24

Adobe

AS15224

130.248.172.0 - 130.248.172.255

256 IP addresses

130.248.173.0 / 24

Adobe

AS15224

130.248.173.0 - 130.248.173.255

256 IP addresses

40.143.226.0 / 24

TierPoint

AS17378

40.143.226.0 - 40.143.226.255

256 IP addresses

63.236.100.0 / 24

PR Newswire

AS21622

63.236.100.0 - 63.236.100.255

256 IP addresses

66.77.16.0 / 24

PR Newswire

AS21622

66.77.16.0 - 66.77.16.255

256 IP addresses

74.202.227.32 / 27

Level 3 Parent

AS3549

74.202.227.32 - 74.202.227.63

32 IP addresses

216.27.93.0 / 25

TierPoint

AS17378

216.27.93.0 - 216.27.93.127

128 IP addresses

216.27.84.64 / 27

TierPoint

AS17378

216.27.84.64 - 216.27.84.95

32 IP addresses

66.192.165.128 / 28

Level 3 Parent

AS3549

66.192.165.128 - 66.192.165.143

16 IP addresses

66.162.193.224 / 28

Level 3 Parent

AS3549

66.162.193.224 - 66.162.193.239

16 IP addresses

64.132.109.48 / 28

Level 3 Parent

AS3549

64.132.109.48 - 64.132.109.63

16 IP addresses

216.27.86.128 / 26

TierPoint

AS17378

216.27.86.128 - 216.27.86.191

64 IP addresses

207.254.213.192 / 26

TierPoint

AS17378

207.254.213.192 - 207.254.213.255

64 IP addresses

69.166.133.128 / 29

TierPoint

AS17378

69.166.133.128 - 69.166.133.135

8 IP addresses

69.166.133.224 / 29

TierPoint

AS17378

69.166.133.224 - 69.166.133.231

8 IP addresses

69.166.133.232 / 29

TierPoint

AS17378

69.166.133.232 - 69.166.133.239

8 IP addresses

Cloudflare

AS13335

Cloudflare

AS13335

2606:4700:3037::6815:2a17

Cloudflare

AS13335

2606:4700:3031::ac43:c73f

Cloudflare

AS13335

TierPoint

AS17378

Proofpoint

AS26211

Proofpoint

AS22843

72.46.76.0 / 22

Equinix (EMEA) Acquisition Enterprises

AS15830

72.46.76.0 - 72.46.79.255

1,024 IP addresses

204.156.176.0 / 23

Equinix (EMEA) Acquisition Enterprises

AS15830

204.156.176.0 - 204.156.177.255

512 IP addresses

204.156.178.0 / 24

204.156.178.0 - 204.156.178.255

256 IP addresses

209.222.65.0 / 24

Equinix (EMEA) Acquisition Enterprises

AS15830

209.222.65.0 - 209.222.65.255

256 IP addresses

209.222.66.0 / 23

Equinix (EMEA) Acquisition Enterprises

AS15830

209.222.66.0 - 209.222.67.255

512 IP addresses

209.162.194.0 / 24

209.162.194.0 - 209.162.194.255

256 IP addresses

216.41.143.0 / 24

Equinix (EMEA) Acquisition Enterprises

AS15830

216.41.143.0 - 216.41.143.255

256 IP addresses

Amazon.com

AS16509

Amazon.com

AS16509

Amazon.com

AS16509

Amazon.com

AS16509