AS21704
New York City Board of Education
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.
- Baseline (neutral) 65
- Trust score 65 / 100
Experimental · trust-vectors model v1.1.0 — a transparent heuristic, not a definitive verdict. How it works →
AS21704 — global IP footprint
Cities where AS21704 has measurable IPv4 allocation. Click any dot to open that city's page. Size and color scale with IP count.
Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 165.155.0.0/16 | 65.5K |
5.7%
|
New York City Board of Education | US | New York | Staten Island |
| 64.125.58.0/23 | 512 |
41.6%
|
New York City Board of Education | US | Colorado | Kersey |
| 9.179.230.0/24 | 256 |
0.0%
|
New York City Board of Education | US | — | — |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS21704 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.
| Prefix | Announcement samples | Last seen |
|---|---|---|
| 165.155.128.0/20 | 24,614 | 2026-07-20 15:21:02 |
| 165.155.216.0/21 | 21,930 | 2026-07-20 15:21:02 |
| 165.155.64.0/18 | 21,920 | 2026-07-20 15:21:02 |
| 165.155.232.0/22 | 21,867 | 2026-07-20 15:21:02 |
| 165.155.192.0/21 | 21,792 | 2026-07-20 15:21:02 |
| 165.155.16.0/22 | 21,790 | 2026-07-20 15:21:02 |
| 165.155.208.0/23 | 21,693 | 2026-07-20 15:21:02 |
| 165.155.144.0/20 | 15,474 | 2026-07-20 15:21:02 |
| 165.155.32.0/22 | 15,410 | 2026-07-20 15:21:02 |
| 9.179.230.0/24 | 14,389 | 2026-07-20 18:34:38 |
| 165.155.32.0/20 | 8,430 | 2026-07-20 15:21:02 |
| 64.125.58.0/24 | 6,710 | 2026-07-13 06:46:19 |
| 165.155.168.0/21 | 6,645 | 2026-07-13 06:46:19 |
| 165.155.160.0/20 | 6,614 | 2026-07-20 15:21:02 |
| 165.155.136.0/21 | 6,606 | 2026-07-13 06:46:19 |
| 165.155.128.0/21 | 6,576 | 2026-07-13 06:46:19 |
| 165.155.176.0/20 | 6,528 | 2026-07-20 15:21:02 |
| 165.155.224.0/21 | 6,521 | 2026-07-20 15:21:02 |
| 165.155.212.0/23 | 6,500 | 2026-07-20 15:21:02 |
| 165.155.20.0/22 | 6,464 | 2026-07-20 15:21:02 |
| 165.155.236.0/22 | 6,425 | 2026-07-20 15:21:02 |
| 165.155.48.0/20 | 6,329 | 2026-07-20 15:21:02 |
| 165.155.40.0/24 | 5,155 | 2026-07-20 15:21:02 |
| 165.155.36.0/22 | 5,149 | 2026-07-20 15:21:02 |
| 165.155.0.0/16 | 4,884 | 2026-07-20 15:21:02 |
| 165.155.186.0/23 | 3,942 | 2026-07-13 06:46:19 |
| 165.155.174.0/24 | 3,904 | 2026-07-13 06:46:19 |
| 165.155.173.0/24 | 3,901 | 2026-07-13 06:46:19 |
| 165.155.228.0/22 | 3,897 | 2026-07-13 06:46:19 |
| 64.125.59.0/24 | 3,895 | 2026-07-13 06:46:19 |
| 165.155.184.0/22 | 3,884 | 2026-07-13 06:46:19 |
| 165.155.175.0/24 | 3,883 | 2026-07-13 06:46:19 |
| 165.155.152.0/22 | 3,879 | 2026-07-13 06:46:19 |
| 165.155.225.0/24 | 3,871 | 2026-07-13 06:46:19 |
| 165.155.154.0/23 | 3,851 | 2026-07-13 06:46:19 |
| 165.155.220.0/22 | 3,846 | 2026-07-13 06:46:19 |
| 165.155.152.0/23 | 3,846 | 2026-07-13 06:46:19 |
| 165.155.176.0/21 | 3,836 | 2026-07-13 06:46:19 |
| 165.155.184.0/23 | 3,832 | 2026-07-13 06:46:19 |
| 165.155.182.0/23 | 3,829 | 2026-07-13 06:46:19 |
| 165.155.165.0/24 | 3,827 | 2026-07-13 06:46:19 |
| 165.155.166.0/24 | 3,819 | 2026-07-13 06:46:19 |
| 165.155.167.0/24 | 3,812 | 2026-07-13 06:46:19 |
| 165.155.150.0/23 | 3,807 | 2026-07-13 06:46:19 |
| 165.155.143.0/24 | 3,805 | 2026-07-13 06:46:19 |
| 165.155.141.0/24 | 3,803 | 2026-07-13 06:46:19 |
| 165.155.104.0/21 | 3,801 | 2026-07-13 06:46:19 |
| 165.155.142.0/24 | 3,798 | 2026-07-13 06:46:19 |
| 165.155.217.0/24 | 3,796 | 2026-07-13 06:46:19 |
| 165.155.134.0/24 | 3,790 | 2026-07-13 06:46:19 |
Showing top 50 of 58 announced prefixes by sample volume.
Frequently Asked Questions
What is AS21704?
AS21704 is an Autonomous System Number assigned to New York City Board of Education. 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 AS21704 announce?
AS21704 announces 66.3K IPv4 addresses distributed across 3 routed CIDR prefixes. The network is registered in United States.
Who operates AS21704?
AS21704 is operated by New York City Board of Education. The organization is based in United States. You can view all IP ranges and related ASNs on the organization page.
What country is AS21704 registered in?
AS21704 is registered in United States. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
