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Autonomous System

AS29990

Xandr Inc.

Announced IPs
33,792
CIDR prefixes
19
ASN
AS29990

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
  • Baseline (neutral) 65
  • Trust score 65 / 100

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

About AppNexus

AppNexus is an American multinational technology company operating a cloud-based software platform that enables and optimizes programmatic online advertising. Headquartered in the Flatiron District of New York City, the company has 23 offices in North America, Latin America, Europe, Asia and Australia.

Founded
2007
Headquarters
New York City
Industry
marketing
Parent
AT&T

Network profile

Source: PeeringDB →
Network type Content
Geographic scope Global
Traffic ratio Balanced
Peering policy Selective
IRR record AS-APPNEXUS

Present at 6 internet exchanges: Equinix New York, Any2West, DE-CIX Frankfurt: DE-CIX Frankfurt Peering LAN, AMS-IX, Equinix Singapore, DE-CIX New York: DE-CIX New York Peering LAN

Top CIDR ranges

CIDRIPsPTR DensityOrganizationCountryStateCity
68.67.128.0/18 16.4K
17.8%
Xandr Inc. US Pennsylvania Feasterville
37.252.160.0/20 4.1K
14.8%
Xandr Inc. US
64.210.56.0/21 2.0K
1.5%
Xandr Inc. US
204.13.192.0/21 2.0K
26.0%
Xandr Inc. US New Jersey Secaucus
37.252.160.0/22 1.0K
0.0%
Xandr Inc. US
37.252.172.0/22 1.0K
0.0%
Xandr Inc. DE
43.250.0.0/22 1.0K
11.2%
Xandr Inc. SG
64.208.136.0/22 1.0K
0.0%
Xandr Inc. US
103.43.88.0/22 1.0K
41.8%
Xandr Inc. AU
104.254.148.0/22 1.0K
61.9%
Xandr Inc. US California Los Angeles
185.33.220.0/22 1.0K
0.0%
Xandr Inc. US
185.89.208.0/22 1.0K
48.6%
Xandr Inc. FR
37.252.166.0/23 512
0.0%
Xandr Inc. US
37.252.170.0/23 512
0.0%
Xandr Inc. DE
103.243.220.0/23 512
0.0%
Xandr Inc. SG
185.83.142.0/23 512
54.5%
Xandr Inc. DE
185.89.210.0/23 512
0.0%
Xandr Inc. NL
216.252.164.0/23 512
6.8%
Xandr Inc. US California Los Angeles
37.252.165.0/24 256
0.0%
Xandr Inc. US
37.252.169.0/24 256
0.0%
Xandr Inc. DE
64.208.141.0/24 256
0.0%
Xandr Inc. US
103.243.223.0/24 256
0.0%
Xandr Inc. SG
172.83.92.0/24 256
13.7%
Xandr Inc. US
185.83.140.0/24 256
24.2%
Xandr Inc. DE
185.89.209.0/24 256
0.0%
Xandr Inc. NL
192.190.7.0/24 256
0.0%
Xandr Inc. US
216.252.166.0/24 256
0.0%
Xandr Inc. US
37.252.164.0/25 128
0.0%
Xandr Inc. US
37.252.168.0/25 128
0.0%
Xandr Inc. DE
172.83.92.128/25 128
0.0%
Xandr Inc. US
185.89.208.0/25 128
0.0%
Xandr Inc. NL
37.252.164.192/26 64
0.0%
Xandr Inc. US
37.252.168.192/26 64
0.0%
Xandr Inc. DE
172.83.92.64/26 64
0.0%
Xandr Inc. US
185.89.208.128/26 64
0.0%
Xandr Inc. NL
37.252.164.160/27 32
0.0%
Xandr Inc. NL
37.252.168.160/27 32
0.0%
Xandr Inc. US
172.83.92.0/27 32
0.0%
Xandr Inc. US
185.89.208.192/27 32
0.0%
Xandr Inc. NL
37.252.164.144/28 16
0.0%
Xandr Inc. NL
37.252.168.128/28 16
0.0%
Xandr Inc. DE
172.83.92.32/28 16
0.0%
Xandr Inc. US
185.89.208.224/28 16
0.0%
Xandr Inc. NL
37.252.164.136/29 8
0.0%
Xandr Inc. NL
37.252.168.144/29 8
0.0%
Xandr Inc. DE
37.252.168.152/29 8
0.0%
Xandr Inc. US
172.83.92.48/29 8
0.0%
Xandr Inc. US
185.89.208.240/29 8
0.0%
Xandr Inc. NL
37.252.164.132/30 4
0.0%
Xandr Inc. NL
172.83.92.60/30 4
0.0%
Xandr Inc. US
37.252.164.130/31 2
0.0%
Xandr Inc. NL
172.83.92.58/31 2
0.0%
Xandr Inc. US
185.89.208.248/31 2
0.0%
Xandr Inc. NL
185.89.208.254/31 2
0.0%
Xandr Inc. NL
37.252.164.128 1
0.0%
Xandr Inc. US
37.252.164.129 1
0.0%
Xandr Inc. NL
172.83.92.56 1
0.0%
Xandr Inc. US
172.83.92.57 1
0.0%
Xandr Inc. SG
185.89.208.250 1
0.0%
Xandr Inc. DE
185.89.208.251 1
0.0%
Xandr Inc. NL
185.89.208.252 1
0.0%
Xandr Inc. DE
185.89.208.253 1
0.0%
Xandr Inc. NL

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS29990 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
172.83.92.0/24 162,093 2026-08-27 16:50:20
192.190.7.0/24 38,119 2026-08-27 16:17:52
43.250.0.0/22 14,383 2026-08-27 16:15:13
103.243.223.0/24 13,974 2026-08-27 16:15:13
103.243.220.0/23 13,930 2026-08-27 16:15:13
64.208.141.0/24 13,591 2026-08-27 16:15:13
103.43.89.0/24 13,590 2026-08-27 16:15:13
103.43.88.0/24 12,799 2026-08-27 16:15:13
103.43.90.0/23 12,735 2026-08-27 16:15:13
68.67.144.0/21 8,284 2026-08-27 16:18:23
104.254.148.0/22 8,283 2026-08-27 16:18:23
68.67.128.0/24 8,227 2026-08-27 16:18:23
68.67.128.0/20 8,222 2026-08-27 16:18:23
64.210.56.0/21 8,125 2026-08-27 16:18:23
68.67.129.0/24 8,102 2026-08-27 16:18:56
68.67.176.0/20 7,590 2026-08-27 16:16:27
68.67.176.0/23 7,530 2026-08-27 16:16:27
68.67.186.0/24 7,384 2026-08-27 16:19:00
216.252.164.0/23 7,205 2026-08-27 16:18:23
68.67.176.0/21 6,968 2026-08-27 16:16:27
68.67.172.0/24 6,799 2026-08-27 16:16:27
68.67.173.0/24 6,734 2026-08-27 16:16:27
68.67.174.0/24 6,726 2026-08-27 16:16:27
68.67.175.0/24 6,689 2026-08-27 16:16:27
64.208.136.0/22 6,655 2026-08-27 16:16:27
185.33.220.0/22 6,576 2026-08-27 16:17:59
68.67.152.0/21 6,573 2026-08-27 16:16:27
68.67.160.0/23 6,573 2026-08-27 16:16:27
37.252.168.0/21 6,507 2026-08-27 16:20:42
37.252.162.0/23 6,425 2026-08-27 16:17:59
37.252.164.0/22 6,418 2026-08-27 16:17:59
37.252.160.0/23 6,352 2026-08-27 16:20:42
185.89.208.0/22 6,328 2026-08-27 16:17:59
204.13.192.0/21 6,270 2026-08-27 16:47:53
68.67.160.0/21 6,064 2026-08-27 16:16:27
185.83.142.0/23 6,064 2026-08-27 16:17:59
185.83.140.0/24 6,062 2026-08-27 16:17:59
68.67.168.0/22 6,060 2026-08-27 16:16:27
216.252.166.0/24 5,886 2026-08-27 16:16:22
204.13.193.0/24 5,699 2026-08-27 16:47:53

Frequently Asked Questions

What is AS29990?

AS29990 is an Autonomous System Number assigned to Xandr Inc.. 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 AS29990 announce?

AS29990 announces 33.8K IPv4 addresses distributed across 19 routed CIDR prefixes. The network is registered in United States.

Who operates AS29990?

AS29990 is operated by Xandr Inc.. The organization is based in United States. You can view all IP ranges and related ASNs on the organization page.

What country is AS29990 registered in?

AS29990 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: 2026-08-27 16:54:05 UTC
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