| AEC | Austria | Certified (since 30 Jun 2020) |
| ALEF-CSIRT | Czech Republic | Certified (since 16 Jul 2020) |
| CERT BWI | Germany | Certified (since 21 Oct 2015) |
| CERT Credit Agricole | France | Certified (since 08 Sep 2021) |
| CERT OPL | Poland | Re-Certification Candidate (since 13 May 2025) |
| CERT PKO BP | Poland | Certified (since 28 Jan 2020) |
| CERT POLSKA | Poland | Re-Certification Candidate (since 13 Jun 2024) |
| CERT PSE | Poland | Re-Certification Candidate (since 10 May 2022) |
| CERT-EE | Estonia | Certified (since 20 Sep 2017) |
| CERT-MU (MU) | Mauritius | Certified (since 14 May 2024) |
| CERT-SE (SE) | Sweden | Certified (since 16 Nov 2011) |
| CERT-TICY (IT) | Italy | Certified (since 29 Dec 2020) |
| CERT.LV (LV) | Latvia | Re-Certification Candidate (since 01 May 2025) |
| CERT.NETWORKS.PL (PL) | Poland | Certified (since 28 Aug 2025) |
| CERT.PT | Portugal | Certified (since 17 Feb 2022) |
| CERT.at | Austria | Certified (since 05 Feb 2018) |
| CERTBI | Italy | Certified (since 13 Jan 2025) |
| CIPHER-CSIRT | Portugal | Certified (since 10 Dec 2019) |
| CSIRT CSAS (CZ) | Czech Republic | Certified (since 10 Mar 2022) |
| CSIRT FCT (PT) | Portugal | Re-Certification Candidate (since 11 Oct 2024) |
| CSIRT-MU (CZ) | Czech Republic | Certified (since 05 Dec 2016) |
| CSIRT-SPCSS (CZ) | Czech Republic | Certified (since 09 May 2025) |
| CSIRT.CZ | Czech Republic | Certified (since 16 Nov 2018) |
| CSIRT.SK | Slovakia | Certified (since 10 May 2025) |
| DFN-CERT | Germany | Re-Certification Candidate (since 03 Jun 2021) |
| DKCERT | Denmark | Certified (since 26 Feb 2024) |
| Deutsche Telekom CERT | Germany | Certified (since 16 Jul 2020) |
| EGI CSIRT | *Europe | Certified (since 02 Oct 2014) |
| ESACERT | *Europe | Certified (since 30 Apr 2021) |
| ETH CSIRT (CH) | Switzerland | Certified (since 22 May 2015) |
| EXN-GSOC (BE) | Belgium | Certified (since 10 Jan 2024) |
| GAZ-SYSTEM CERT | Poland | Certified (since 10 Aug 2021) |
| GEANT CERT | *Europe | Certified (since 22 Jun 2015) |
| GOVCERT.LU | Luxembourg | Certified (since 26 Sep 2024) |
| INCIBE-CERT | Spain | Certified (since 26 Feb 2024) |
| Infineon CDC | Germany | Certified (since 26 Feb 2024) |
| JN DATA CDC | Denmark | Certified (since 18 Dec 2020) |
| KIT-CERT | Germany | Certified (since 26 Sep 2024) |
| KPN-CERT | Netherlands | Certified (since 27 Mar 2012) |
| KrCERT/CC (KR) | Korea, Republic Of | Certified (since 26 Feb 2024) |
| KraftCERT | Norway | Certified (since 15 Mar 2021) |
| LiU IRT | Sweden | Certified (since 07 Nov 2014) |
| NCSC-FI | Finland | Re-Certification Candidate (since 22 Jan 2025) |
| NCSC-NL | Netherlands | Certified (since 26 Nov 2010) |
| NESTOR (CZ) | Czech Republic | Certified (since 13 Jan 2025) |
| NORDUnet CERT | *Europe | Re-Certification Candidate (since 17 Feb 2025) |
| PGE-CERT (PL) | Poland | Re-Certification Candidate (since 12 Jul 2024) |
| PXS-CSIRT | Belgium | Re-Certification Candidate (since 08 Nov 2023) |
| SK-CERT | Slovakia | Certified (since 26 Mar 2020) |
| SURFcert | Netherlands | Certified (since 25 Aug 2023) |
| SWITCH-CERT | Switzerland | Certified (since 02 Jun 2011) |
| Swedbank CDC | Sweden | Certified (since 20 Sep 2023) |
| TCS-CERT (LU) | Luxembourg | Certified (since 31 Aug 2023) |
| TDC NET CDC (DK) | Denmark | Certified (since 20 Sep 2023) |
| TeliaCERT | Sweden | Certified (since 29 Sep 2011) |
| Truesec-CSIRT (SE) | Sweden | Certified (since 31 Aug 2023) |
| UiO-CERT | Norway | Certified (since 26 Feb 2024) |
| WienCERT | Austria | Re-Certification Candidate (since 04 Dec 2020) |
| Z-CERT (NL) | Netherlands | Certified (since 27 Feb 2025) |
| eduCSC-NO (NO) | Norway | Certified (since 31 Jan 2014) |
| itm8 CDC (DK) | Denmark | Certified (since 09 May 2025) |