Masergy Communications, Inc.
AS19855 is Masergy Communications, Inc. (masergy.com). It announces 157,440 IPv4 addresses in 98 prefixes, and 5 IPv6 prefixes.
United States· ARIN· allocated 2001-02-21· business
Where its space is
The IPv4 it announces that IP Geolocation places, by country. A /24 counts for the AS announcing most of it.
- United States143,409 · 91.09%
- United Kingdom7,347 · 4.67%
- Canada1,057 · 0.67%
- Singapore756 · 0.48%
- France663 · 0.42%
- Germany509 · 0.32%
- The Netherlands475 · 0.30%
- Brazil438 · 0.28%
- Switzerland336 · 0.21%
- India306 · 0.19%
- Mexico232 · 0.15%
- Australia226 · 0.14%
Registry record
Its ASN Whois record, as the registry publishes it.
- handle
- MASERGY
- name
- Masergy Communications, Inc.
- org
- MSRG
- org name
- Masergy Communications, Inc.
- org address
- 7900 Windrose Ave, Ste 8200S, Plano, TX, 75024
- org city
- Plano
- org country
- US
- country
- US
- source
- arin
- created
- 2001-02-21
- updated
- 2012-03-02
- abuse name
- Masergy-Abuse
- abuse email
- abuse@masergy.com
- abuse phone
- +1-866-885-5558
- abuse kind
- role
- abuse city
- Plano
- abuse country
- US
- admin name
- Terry Castellanos
- admin email
- terry.castellanos@masergy.com
- admin phone
- +1-214-442-5668
- admin kind
- person
- admin city
- Plano
- admin country
- US
- tech
- ZM130-ARIN
- tech name
- Masergy Communications
- tech email
- arin@masergy.com
- tech phone
- +1-877-462-7374
- tech kind
- role
- tech city
- Plano
- tech country
- US
What the databases see
Addresses each address-keyed database holds in the IPv4 it announces, as a share of that space, with its largest providers. Counts overlap.
- VPN IP334watchguard0.21%
- anyip, floppydata, geonode0.02%
- None here
- None here
- 0.00%
- None here
- Hosting IP68,09643.25%
- None here
- None here
- Anycast IP2560.16%
- SSH IP450.03%
- None here
- 0.01%
IPv4 prefixes
Every IPv4 prefix BGP Route saw it announce. A prefix another AS also announces says so.
| PREFIX | COUNTRY | RPKI | PEERS | FIRST SEEN |
|---|---|---|---|---|
| 45.45.151.0/24 | United States | not found | 17 | 2026-10-02 |
| 64.47.0.0/16 | United States | not found | 17 | 2026-10-02 |
| 64.47.0.0/23 | United States | not found | 17 | 2026-10-02 |
| 64.47.3.0/24 | United States | not found | 17 | 2026-10-02 |
| 64.47.4.0/24 | United States | not found | 17 | 2026-10-02 |
| 64.47.5.0/24 | United States | not found | 17 | 2026-10-02 |
| 64.47.14.0/24 | United States | not found | 17 | 2026-10-02 |
| 64.47.18.0/24 | United States | not found | 17 | 2026-10-02 |
| 64.47.21.0/24 | United States | not found | 17 | 2026-10-02 |
| 64.47.24.0/24 | United States | not found | 17 | 2026-10-02 |
| 64.47.27.0/24 | United States | not found | 17 | 2026-10-02 |
| 64.47.28.0/23 | United States | not found | 17 | 2026-10-02 |
| 64.47.30.0/23 | United States | not found | 17 | 2026-10-02 |
| 64.47.36.0/23 | United States | not found | 17 | 2026-10-02 |
| 64.47.40.0/23 | United States | not found | 17 | 2026-10-02 |
| 64.47.43.0/24 | United States | not found | 17 | 2026-10-02 |
| 64.47.46.0/24 | United States | not found | 17 | 2026-10-02 |
| 64.47.48.0/24 | United States | not found | 17 | 2026-10-02 |
| 64.47.49.0/24 | United States | not found | 17 | 2026-10-02 |
| 64.47.50.0/23 | United States | not found | 17 | 2026-10-02 |
| 64.47.56.0/23 | United States | not found | 17 | 2026-10-02 |
| 64.47.61.0/24 | United States | not found | 17 | 2026-10-02 |
| 64.47.62.0/23 | United States | not found | 17 | 2026-10-02 |
| 64.47.72.0/22 | United States | not found | 17 | 2026-10-02 |
| 64.47.76.0/22 | United States | not found | 17 | 2026-10-02 |
| 64.47.84.0/22 | United States | not found | 17 | 2026-10-02 |
| 64.47.88.0/22 | United States | not found | 17 | 2026-10-02 |
| 64.47.92.0/22 | United States | not found | 17 | 2026-10-02 |
| 64.47.96.0/22 | United States | not found | 17 | 2026-10-02 |
| 64.47.100.0/22 | United States | not found | 17 | 2026-10-02 |
| 64.47.105.0/24 | United States | not found | 17 | 2026-10-02 |
| 64.47.107.0/24 | United States | not found | 17 | 2026-10-02 |
| 64.47.112.0/22 | United States | not found | 17 | 2026-10-02 |
| 64.47.117.0/24 | United States | not found | 17 | 2026-10-02 |
| 64.47.118.0/24 | United States | not found | 17 | 2026-10-02 |
| 64.47.120.0/22 | United States | not found | 17 | 2026-10-02 |
| 64.47.128.0/24 | United States | not found | 17 | 2026-10-02 |
| 64.47.160.0/22 | United States | not found | 17 | 2026-10-02 |
| 64.47.164.0/22 | United States | not found | 17 | 2026-10-02 |
| 64.47.164.0/24 | United States | not found | 17 | 2026-10-02 |
| 64.47.180.0/24 | United States | not found | 17 | 2026-10-02 |
| 64.47.184.0/24 | United States | not found | 17 | 2026-10-02 |
| 64.47.187.0/24 | United States | not found | 17 | 2026-10-02 |
| 64.47.188.0/22 | United States | not found | 17 | 2026-10-02 |
| 64.47.197.0/24 | United States | not found | 17 | 2026-10-02 |
| 64.47.208.0/22 | United States | not found | 17 | 2026-10-02 |
| 64.47.214.0/24 | United States | not found | 17 | 2026-10-02 |
| 64.47.216.0/24 | United States | not found | 17 | 2026-10-02 |
| 64.47.217.0/24 | United States | not found | 17 | 2026-10-02 |
| 64.47.218.0/24 | United States | not found | 17 | 2026-10-02 |
| 64.47.224.0/22 | Canada | not found | 17 | 2026-10-02 |
| 64.47.228.0/22 | Switzerland | not found | 17 | 2026-10-02 |
| 64.47.232.0/24 | United States | not found | 17 | 2026-10-02 |
| 64.47.233.0/24 | Brazil | not found | 17 | 2026-10-02 |
| 64.47.235.0/24 | United States | not found | 17 | 2026-10-02 |
| 64.47.238.0/24 | United States | not found | 17 | 2026-10-02 |
| 64.47.241.0/24 | United States | not found | 17 | 2026-10-02 |
| 64.47.242.0/24 | United States | not found | 17 | 2026-10-02 |
| 64.47.246.0/23 | United States | not found | 17 | 2026-10-02 |
| 64.47.252.0/24 | United States | not found | 17 | 2026-10-02 |
| 64.47.253.0/24 | United States | not found | 17 | 2026-10-02 |
| 64.138.0.0/17 | United States | not found | 17 | 2026-10-02 |
| 64.138.2.0/23 | United States | not found | 17 | 2026-10-02 |
| 64.138.4.0/23 | United States | not found | 17 | 2026-10-02 |
| 64.138.6.0/23 | United States | not found | 17 | 2026-10-02 |
| 64.138.8.0/23 | United States | not found | 17 | 2026-10-02 |
| 64.138.10.0/23 | United States | not found | 17 | 2026-10-02 |
| 64.138.20.0/22 | United States | not found | 17 | 2026-10-02 |
| 64.138.26.0/24 | Singapore | not found | 17 | 2026-10-02 |
| 64.138.31.0/24 | United Kingdom | not found | 17 | 2026-10-02 |
| 64.138.128.0/18 | United States | not found | 17 | 2026-10-02 |
| 64.138.128.0/22 | United States | not found | 17 | 2026-10-02 |
| 64.138.133.0/24 | United States | not found | 17 | 2026-10-02 |
| 64.138.134.0/24 | United States | not found | 17 | 2026-10-02 |
| 64.138.137.0/24 | Brazil | not found | 17 | 2026-10-02 |
| 64.138.140.0/22 | United States | not found | 17 | 2026-10-02 |
| 64.138.144.0/22 | China | not found | 17 | 2026-10-02 |
| 64.138.149.0/24 | United States | not found | 17 | 2026-10-02 |
| 64.138.150.0/24 | United States | not found | 17 | 2026-10-02 |
| 64.138.153.0/24 | United States | not found | 17 | 2026-10-02 |
| 64.138.156.0/22 | Philippines | not found | 17 | 2026-10-02 |
| 65.96.0.0/18 | United States | valid | 17 | 2026-10-02 |
| 65.96.128.0/18 | United States | valid | 17 | 2026-10-02 |
| 74.116.49.0/24 | United States | not found | 17 | 2026-10-02 |
| 80.241.64.0/20 | United Kingdom | not found | 17 | 2026-10-02 |
| 93.187.16.0/21 | Germany | not found | 17 | 2026-10-02 |
| 94.199.128.0/21 | United Kingdom | not found | 17 | 2026-10-02 |
| 140.242.146.0/24 | United States | not found | 17 | 2026-10-02 |
| 140.242.147.0/24 | United States | not found | 17 | 2026-10-02 |
| 169.143.243.0/24 | United States | not found | 17 | 2026-10-02 |
| 185.60.28.0/22 | United Kingdom | not found | 17 | 2026-10-02 |
| 185.60.31.0/24 | United Kingdom | not found | 17 | 2026-10-02 |
| 192.131.149.0/24 | United States | not found | 17 | 2026-10-02 |
| 192.197.247.0/24 | United States | not found | 17 | 2026-10-02 |
| 198.73.224.0/24 | United States | not found | 17 | 2026-10-02 |
| 204.139.40.0/24 | United States | not found | 17 | 2026-10-02 |
| 204.139.45.0/24 | United States | not found | 17 | 2026-10-02 |
| 204.139.49.0/24 | United States | not found | 17 | 2026-10-02 |
IPv6 prefixes
Every IPv6 prefix BGP Route saw it announce.
| PREFIX | COUNTRY | RPKI | PEERS | FIRST SEEN |
|---|---|---|---|---|
| 2400:7160:2000::/44 | India | valid | 20 | 2026-10-02 |
| 2400:7160:2020::/44 | India | valid | 20 | 2026-10-02 |
| 2402:2100::/32 | Hong Kong | not found | 20 | 2026-10-02 |
| 2607:fa70::/32 | United States | not found | 20 | 2026-10-02 |
| 2a03:6580::/32 | United Kingdom | not found | 20 | 2026-10-02 |
Test the real build first.
An evaluation license puts a full current build in your hands — every row, every column, no sampling — so you can measure it against your own traffic before anyone talks about terms.