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Autonomous System

AS6307

American Express Company

Announced IPs
35,072
CIDR prefixes
47
ASN
AS6307

Reputation · trust score

A transparent 0–100 signal. Every entity starts at a neutral baseline of 65; threat-intel blocklists, exposure, reverse-DNS, routing and allocation each adjust it up or down. Higher is more trustworthy.

65/100
Moderate
How this score is built

Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →

Network profile

Source: PeeringDB →
Geographic scope Not Disclosed
Traffic ratio Not Disclosed
Peering policy Selective

Present at 2 internet exchanges: Equinix Dallas, Equinix Ashburn

Top CIDR ranges

CIDRIPsPTR DensityOrganizationCountryStateCity
139.71.80.0/20 4.1K
24.8%
American Express Company US
139.71.112.0/20 4.1K
44.3%
American Express Company US
139.71.0.0/21 2.0K
53.0%
American Express Company US
139.71.16.0/21 2.0K
24.5%
American Express Company US
139.71.48.0/21 2.0K
10.4%
American Express Company US
139.71.64.0/21 2.0K
45.2%
American Express Company US
139.71.0.0/22 1.0K
44.5%
American Express Company US
139.71.8.0/22 1.0K
30.0%
American Express Company US
139.71.24.0/22 1.0K
8.3%
American Express Company US
139.71.72.0/22 1.0K
35.3%
American Express Company US
139.71.100.0/22 1.0K
30.7%
American Express Company US
139.71.108.0/22 1.0K
24.2%
American Express Company US
139.71.180.0/22 1.0K
37.8%
American Express Company US
139.71.192.0/22 1.0K
1.2%
American Express Company US
148.173.88.0/22 1.0K
12.0%
American Express Company US Arizona Phoenix
148.173.96.0/22 1.0K
18.1%
American Express Company US
12.29.100.0/23 512
0.0%
American Express Company US
139.71.6.0/23 512
84.0%
American Express Company US
139.71.28.0/23 512
12.5%
American Express Company US
139.71.76.0/23 512
38.9%
American Express Company US
139.71.100.0/23 512
0.0%
American Express Company US
139.71.106.0/23 512
39.3%
American Express Company US
139.71.144.0/23 512
9.8%
American Express Company US Arizona Scottsdale
139.71.178.0/23 512
54.1%
American Express Company US
139.71.184.0/23 512
43.8%
American Express Company US
139.71.194.0/23 512
0.0%
American Express Company US
139.71.196.0/23 512
3.3%
American Express Company US
148.173.100.0/23 512
15.8%
American Express Company US Arizona Phoenix
148.173.106.0/23 512
1.8%
American Express Company US
12.10.219.0/24 256
10.2%
American Express Company US Oklahoma Oklahoma City
12.29.102.0/24 256
0.0%
American Express Company US
12.105.185.0/24 256
17.2%
American Express Company US
139.71.5.0/24 256
6.6%
American Express Company US
139.71.78.0/24 256
39.5%
American Express Company US
139.71.102.0/24 256
0.0%
American Express Company US
139.71.105.0/24 256
67.6%
American Express Company US
139.71.136.0/24 256
1.6%
American Express Company US New Jersey Jersey City
139.71.147.0/24 256
2.3%
American Express Company US
139.71.152.0/24 256
18.0%
American Express Company US
139.71.155.0/24 256
1.6%
American Express Company US
139.71.176.0/24 256
4.7%
American Express Company US
139.71.186.0/24 256
26.6%
American Express Company US
139.71.192.0/24 256
0.0%
American Express Company AU New South Wales Sydney
139.71.193.0/24 256
0.0%
American Express Company US
139.71.196.0/24 256
0.0%
American Express Company SG
139.71.197.0/24 256
0.0%
American Express Company US
139.71.233.0/24 256
34.8%
American Express Company US
148.173.86.0/24 256
2.0%
American Express Company US
148.173.100.0/24 256
0.0%
American Express Company US Arizona Phoenix
148.173.103.0/24 256
45.3%
American Express Company US
148.173.104.0/24 256
62.1%
American Express Company US
148.173.144.0/24 256
25.4%
American Express Company US
193.32.34.0/24 256
0.0%
American Express Company US
148.173.86.0/25 128
0.0%
American Express Company MX
148.173.86.128/25 128
0.0%
American Express Company US
148.173.101.0/25 128
0.0%
American Express Company US
148.173.101.128/26 64
0.0%
American Express Company US
148.173.101.192/27 32
0.0%
American Express Company US
148.173.101.240/28 16
0.0%
American Express Company US
148.173.101.232/29 8
0.0%
American Express Company US
148.173.101.228/30 4
0.0%
American Express Company US
148.173.101.226/31 2
0.0%
American Express Company US
148.173.101.224 1
0.0%
American Express Company US
148.173.101.225 1
0.0%
American Express Company CA

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS6307 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
139.71.103.0/24 222,121 2026-08-20 08:47:47
139.71.185.0/24 88,573 2026-09-15 03:47:41
139.71.4.0/24 75,745 2026-09-08 05:45:15
139.71.233.0/24 52,186 2026-09-08 07:04:13
139.71.83.0/24 37,418 2026-09-15 03:47:42
139.71.197.0/24 19,682 2026-09-15 03:47:41
139.71.155.0/24 19,586 2026-09-15 03:47:41
148.173.107.0/24 18,859 2026-09-15 03:47:48
139.71.54.0/24 15,350 2026-09-15 03:47:41
139.71.28.0/23 14,865 2026-09-15 03:47:41
139.71.192.0/24 14,836 2026-09-15 03:47:48
139.71.180.0/23 14,795 2026-09-15 03:47:48
139.71.127.0/24 14,764 2026-09-15 03:47:41
139.71.184.0/24 14,751 2026-09-15 03:47:41
139.71.92.0/24 14,741 2026-09-15 03:47:41
139.71.147.0/24 14,719 2026-09-15 03:47:48
12.29.102.0/24 14,711 2026-09-15 03:48:20
139.71.78.0/24 14,706 2026-09-15 03:47:41
139.71.116.0/24 14,701 2026-09-15 03:47:41
139.71.67.0/24 14,683 2026-09-15 03:47:48
139.71.120.0/24 14,676 2026-09-15 03:47:48
139.71.91.0/24 14,662 2026-09-15 03:47:48
139.71.50.0/24 14,658 2026-09-15 03:47:41
139.71.68.0/24 14,653 2026-09-15 03:47:48
139.71.48.0/23 14,648 2026-09-15 03:47:48
139.71.115.0/24 14,634 2026-09-15 03:47:41
193.32.34.0/24 14,623 2026-09-15 03:47:48
139.71.26.0/24 14,606 2026-09-15 03:47:41
139.71.193.0/24 14,571 2026-09-15 03:47:41
148.173.100.0/24 14,570 2026-09-15 03:47:41
139.71.195.0/24 14,563 2026-09-15 03:47:41
148.173.86.0/24 14,563 2026-09-15 03:47:41
139.71.22.0/24 14,561 2026-09-15 03:47:41
148.173.104.0/24 14,544 2026-09-15 03:47:48
139.71.145.0/24 14,542 2026-09-15 03:47:48
139.71.2.0/24 14,535 2026-09-15 03:47:48
139.71.0.0/24 14,514 2026-09-15 03:47:41
139.71.106.0/24 14,509 2026-09-15 03:47:41
139.71.8.0/24 14,465 2026-09-15 03:47:48
139.71.186.0/24 14,445 2026-09-15 03:47:48
139.71.113.0/24 14,443 2026-09-15 03:47:41
139.71.94.0/24 14,439 2026-09-15 03:47:48
139.71.69.0/24 14,435 2026-09-15 03:47:41
139.71.93.0/24 14,414 2026-09-15 03:48:20
139.71.111.0/24 14,411 2026-09-15 03:47:41
139.71.114.0/24 14,396 2026-09-15 03:47:41
139.71.19.0/24 14,394 2026-09-15 03:47:41
139.71.144.0/24 14,393 2026-09-15 03:47:41
139.71.95.0/24 14,387 2026-09-15 03:47:41
139.71.73.0/24 14,377 2026-09-15 03:47:41

Showing top 50 of 123 announced prefixes by sample volume.

Frequently Asked Questions

What is AS6307?

AS6307 is an Autonomous System Number assigned to American Express Company. An ASN identifies a network that controls a specific set of IP addresses and determines how traffic is routed across the internet via BGP (Border Gateway Protocol).

How many IP addresses does AS6307 announce?

AS6307 announces 35.1K IPv4 addresses distributed across 47 routed CIDR prefixes. The network is registered in United States.

Who operates AS6307?

AS6307 is operated by American Express Company. The organization is based in United States. You can view all IP ranges and related ASNs on the organization page.

What country is AS6307 registered in?

AS6307 is registered in United States. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.

Last updated: 2026-09-15 04:24:06 UTC
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