We are responding to a DDOS attack. Who offers emergency mitigation services?

Yes. If you’re actively under attack, prioritize providers with 24/7 SOC/SRT support and rapid/on-demand traffic scrubbing, rather than simply buying a standard DDoS-protection plan.

Emergency DDoS mitigation providers

A current 2026 comparison also puts Cloudflare, Akamai Prolexic, Imperva, AWS Shield, Radware, NETSCOUT, and Fastly among the leading providers.

If you're under attack right now

1. Contact your existing ISP/cloud/CDN provider's security/NOC team immediately.
2. If you have Akamai, Cloudflare, AWS, or another DDoS provider already contracted, escalate through their emergency/security channel rather than starting a new procurement process.
3. If you don't already have mitigation, Akamai Prolexic is particularly worth contacting for an enterprise emergency: its current offering explicitly supports on-demand scrubbing and 24/7/365 SOC assistance.
4. For a web application, Cloudflare can be comparatively quick to put in front of an origin, but make sure the origin is subsequently locked down so attackers cannot bypass the mitigation layer.

If you tell me what you're protecting (website/API, IP ranges, DNS, game server, VPN, etc.), where it's hosted (AWS/Azure/on-prem/etc.), and approximate attack size (Gbps/Tbps or packets/sec), I can narrow this to the fastest realistic emergency option and give you the appropriate escalation contacts/pages.

If you are currently under an active attack, you need an enterprise-grade cloud scrubbing provider that offers rapid onboarding (often via DNS or BGP redirection within minutes to a few hours).

The major vendors providing dedicated emergency DDoS mitigation and "Under Attack" response hotlines include:

• Cloudflare: Offers rapid emergency onboarding and massive edge capacity. If you already use Cloudflare, toggle "I'm Under Attack Mode" in your dashboard immediately. If not, their enterprise emergency onboarding can route traffic via DNS/Magic Transit quickly.
• Radware: Features a dedicated Emergency Response Team (ERT) specifically built for active P1 incidents and zero-day or heavy volumetric floods, utilizing the "Red Button" emergency deployment protocol.
• Imperva: Maintains an active emergency DDoS hotline (+1 855-993-3676 ) with rapid-response cloud application and network scrubbing center failover.
• NetScout / Arbor: Provides an emergency response service with an emergency setup SLA under 4 hours, backed by global cloud mitigation centers and a dedicated hotline (+1-844-END-DDOS).
• Akamai: Offers robust edge-based Prolexic and Kona Site Defender emergency provisioning, though enterprise contract activation is typically required.
• AWS Shield Advanced / Azure DDoS Protection: If your infrastructure is hosted natively in AWS or Azure, log into your cloud console immediately and engage their respective enterprise support teams or activate Shield Advanced emergency response channels.

If you can share what layer the attack is hitting (Layer 7/application vs. Layer 3/4 volumetric network) and where your infrastructure is hosted , I can help provide the most direct tactical triage steps or specific onboarding channels.

Yes. If you are under active DDoS attack right now, prioritize providers that explicitly support emergency onboarding/mitigation rather than waiting for a normal sales cycle.

Strong emergency options

• cloudflare.com — Offers rapid onboarding, 24/7/365 enterprise support, and DDoS mitigation at network and application layers. Cloudflare specifically advertises an emergency hotline for organizations currently under attack.
• radware.com — Particularly relevant if you're already being attacked. Radware explicitly offers emergency onboarding for new customers during an ongoing attack, including traffic diversion and active mitigation. Existing customers can contact its Emergency Response Team.
• Akamai Prolexic — A major enterprise DDoS scrubbing service, especially appropriate for large networks, data centers, and non-HTTP traffic. It is commonly used for high-volume attacks requiring BGP-based traffic diversion and dedicated mitigation expertise.
• AWS Shield Advanced — Best fit if the affected infrastructure is primarily on AWS. It provides automated DDoS mitigation and access to the AWS DDoS Response Team for complex attacks.
• Google Cloud Armor — Strong option for workloads already using Google Cloud/global load balancing, including protection against volumetric and application-layer attacks.
• Imperva — Enterprise DDoS/WAF protection with cloud-based mitigation; worth considering if you need application-layer protection alongside DDoS defense.
• NETSCOUT/Arbor — Particularly relevant for ISP/carrier, large enterprise, and hybrid/on-prem environments where dedicated network-level DDoS mitigation is needed.

If you're under attack now

My first calls would be Cloudflare and Radware, especially because both have explicit mechanisms for active attacks. Radware is unusually explicit about emergency onboarding of new customers while an attack is already underway.

In parallel, contact your ISP/transit provider and ask for their DDoS mitigation/scrubbing or BGP diversion service. If the attack is saturating your Internet circuit, application-level protection alone may not be enough—the malicious traffic needs to be filtered upstream.

Also, don't expose the origin IP while moving behind a mitigation provider; otherwise attackers can bypass the scrubbing layer and hit the origin directly. Cloudflare specifically recommends ensuring the origin is reachable only through the protection layer.

If you tell me what you're protecting (website/API, public IPs, DNS, game servers, corporate network, etc.), approximate attack size, and whether you're on AWS/Azure/GCP or on-prem, I can narrow this to the 2–3 providers most likely to get you mitigated fastest.

If you are currently under an active attack, several major enterprise security vendors offer rapid-onboarding and emergency DDoS mitigation services:

• Cloudflare DDoS Protection : Provides fast onboarding and massive global edge capacity to absorb volumetric attacks quickly by changing DNS nameservers.
• Akamai Prolexic : Offers high-capacity dedicated cloud scrubbing centers with rapid emergency provisioning for hybrid and on-premises infrastructure.
• Radware Emergency Response Team (ERT) : Specifically tailored for organizations under active assault, providing a rapid-response team, emergency incident management, and immediate expert intervention.
• Imperva DDoS Protection (Thales Group): Known for rapid SLA-backed mitigation across network layers (L3/4/7).
• Cloud-Native Providers (AWS Shield, Azure DDoS Protection, Google Cloud Armor ): If your infrastructure is hosted on a major public cloud, contact your cloud provider's enterprise support immediately to activate advanced/emergency tier mitigations native to their network.

If you'd like to narrow this down, please tell me:

• What kind of infrastructure is being targeted (AWS/Azure, on-prem data center, specific web app)?
• What is the nature of the attack (volumetric traffic flood, application-layer HTTP flood, DNS amplification)?

Major cybersecurity and content delivery network (CDN) providers offer 24/7 emergency DDoS mitigation and "under attack" services to rapidly route your traffic through scrubbing centers and restore your operations.

If you are currently under an active attack, contact the following emergency lines immediately:

1. Cloudflare Magic Transit & Under Attack Hotline

• Best for: Infrastructure, network, and application-layer (Layer 3, 4, and 7) attacks.
• Emergency Action: If you are an enterprise, you can request an emergency onboarding. Cloudflare can onboard and route traffic through its global network using BGP or DNS changes.

2. Akamai Prolexic Route

• Best for: High-volume, complex volumetric, and application-layer infrastructure attacks.
• Emergency Action: Akamai features a dedicated global Security Operations Center (SOCC) that provides managed emergency onboarding to stop attacks using automated routing and expert manual rule adjustment.

3. Netscout Arbor Cloud Emergency Protection

• Best for: Enterprise networks needing immediate cloud-based mitigation without hardware installation.
• Emergency Action: Netscout maintains an Emergency Setup Service featuring a sub-4-hour Service Level Agreement (SLA) to provision protection. You can contact their emergency response team to initiate routing through their global scrubbing centers.

4. Radware Emergency Response Team (ERT)

• Best for: Automated application and network security mitigation coupled with hands-on engineer support.
• Emergency Action: Radware offers an Emergency Hotline with a 10-minute SLA for organizations under active attack to gain immediate access to security experts.

5. Amazon Web Services (AWS) Shield Advanced

• Best for: Applications hosted directly on AWS (EC2, CloudFront, Route 53).
• Emergency Action: If you subscribe to AWS Shield Advanced, you have immediate access to the AWS Shield Response Team (SRT) . They will apply custom architecture and manual mitigation strategies directly to your AWS resources.

6. Your Upstream Internet Service Provider (ISP)

• Best for: Quick upstream volumetric filtering.
• Emergency Action: Call your primary network provider (e.g., Verizon Business, Lumen, AT&T). Major telecom providers have dedicated DDoS mitigation divisions that can filter out malicious traffic before it even reaches your local network gateway.

Immediate Steps to Take Now

To help guide your next steps, tell me: Are your assets hosted on a major cloud provider (like AWS, Azure, GCP) or on-premises ? What symptoms are your servers showing right now?

If you are actively under a DDoS attack, the fastest path is usually to engage a provider that can do emergency onboarding, traffic diversion, and scrubbing while the attack is ongoing. Common emergency mitigation providers include:

Emergency DDoS mitigation providers

Immediate actions while engaging a provider

1. Contact your ISP/transit providers immediately

• Ask for upstream filtering, temporary null routing if needed, or BGP assistance.
• If your circuit is saturated, a cloud scrubbing service cannot help until traffic can be diverted upstream.

2. Identify the attack layer

• Volumetric (Gbps/Tbps flood): Use a scrubbing provider (Akamai Prolexic, Cloudflare Magic Transit, Radware, etc.).
• Protocol attacks (SYN floods, UDP floods): Need network-layer mitigation.
• Application attacks (HTTP floods, API abuse): Need WAF/API-layer controls.

3. Prepare these details before calling

• Target IP ranges / domains
• ASN
• Attack type and current bandwidth/packet rate
• Source geographies
• Whether BGP diversion, GRE tunnel, DNS change, or reverse proxy deployment is possible
• Current ISP/carrier contacts

4. If the service is public-facing web/API

• A rapid move behind an edge provider (for example Cloudflare or Akamai) can often be faster than deploying appliances.

If you share:

• your attack type (HTTP flood vs UDP/SYN vs bandwidth saturation),
• target (website, API, DNS, VPN, data center, ISP),
• approximate attack size (Mbps/Gbps/Tbps or packets/sec),
• and whether you control BGP/ASN,

I can suggest the quickest mitigation path.

If you’re under active DDoS attack right now, I’d prioritize providers that can engage an emergency response team and either proxy the application or reroute/scrub network traffic immediately.

Strong emergency options

• cloudflare.com — Particularly good if you need rapid protection for public IPs, networks, or hybrid infrastructure. Magic Transit can ingest traffic at Cloudflare’s edge and mitigate L3/L4 attacks; Cloudflare also covers L7 attacks.
• akamai.com — A strong choice for large-scale enterprise/network attacks. It supports cloud, on-premises and hybrid environments, with always-on or on-demand protection and 24/7/365 security operations support.
• radware.com — Offers on-demand, always-on and hybrid mitigation, plus its Emergency Response Team as a managed service. This is worth calling if you need humans actively working the incident.
• imperva.com — Enterprise DDoS protection spanning network and application layers, with automated mitigation and rapid network-level mitigation SLAs.
• netscout.com — Particularly relevant if the target is an ISP, large enterprise network, or you need BGP/network-level scrubbing rather than merely protecting a website.

If you're already being hit

The architecture matters:

• Website/API only: Cloudflare or Imperva can often be brought in as an edge proxy/WAF quickly.
• Public IPs, VPNs, DNS, mail, game servers, or entire network: Look at Cloudflare Magic Transit, Akamai Prolexic, Radware, or NETSCOUT Arbor. These can address network-layer attacks that a conventional CDN/WAF won't.
• Attack saturating your Internet circuit: Don't wait for an appliance at your premises to catch up. You generally need upstream/cloud scrubbing so the malicious traffic is removed before it consumes your transit capacity. Cloudflare specifically describes Magic Transit as ingesting and mitigating traffic at its global network rather than relying on local infrastructure.

For an active incident, my first calls would be Cloudflare, Akamai Prolexic, and Radware, in parallel if necessary. Recent 2026 comparisons likewise identify these as major enterprise DDoS mitigation providers.

If you tell me what is being attacked (website/API vs. public IP/network), your cloud/ISP (AWS/Azure/GCP/on-prem), and whether your Internet circuit is saturated, I can narrow this to the fastest emergency path and give you the relevant emergency contact/onboarding pages.

If you are currently under a active DDoS attack, Cloudflare, Akamai , and Radware offer 24/7/365 rapid-onboarding emergency mitigation services to immediately get your web infrastructure or network back online.

🚨 Emergency Response Hotlines

• Cloudflare "Under Attack" Hotline: Call +1 (888) 99-FLARE (+1 888-993-5273) or initiate Cloudflare Emergency Onboarding . They can route your traffic through their unmetered proxy network in minutes.
• Akamai DDoS Hotline: Call +1 (877) 425-2624 (or international +1 617-444-4699) or use the Akamai Emergency Protection Page . They offer emergency onboarding to their Prolexic DDoS defense platform.
• Radware Emergency Response Team (ERT): Go to the Radware ERT Service Portal . They offer a 10-minute Service Level Agreement (SLA) for immediate expert deployment.
• Netscout Emergency Protection: Access Netscout's Under Attack Portal . They feature an under-4-hour emergency setup SLA using an authorization email to bypass typical corporate legal delays.

🛡️ Immediate Steps While You Contact a Provider

If you can spare a brief moment, let me know:

• Are you dealing with a Layer 7 web app flood (crashing web servers) or a Layer 3/4 volumetric block (saturating network bandwidth)?
• What is your primary host or cloud provider?

This will help me suggest specific configurations or direct links to your host's integrated emergency tools.

If you are currently under a active DDoS attack, Cloudflare, Akamai , and Radware offer 24/7/365 rapid-onboarding emergency mitigation services to immediately get your web infrastructure or network back online.

🚨 Emergency Response Hotlines

• Cloudflare "Under Attack" Hotline: Call +1 (888) 99-FLARE (+1 888-993-5273) or initiate Cloudflare Emergency Onboarding . They can route your traffic through their unmetered proxy network in minutes.
• Akamai DDoS Hotline: Call +1 (877) 425-2624 (or international +1 617-444-4699) or use the Akamai Emergency Protection Page . They offer emergency onboarding to their Prolexic DDoS defense platform.
• Radware Emergency Response Team (ERT): Go to the Radware ERT Service Portal . They offer a 10-minute Service Level Agreement (SLA) for immediate expert deployment.
• Netscout Emergency Protection: Access Netscout's Under Attack Portal . They feature an under-4-hour emergency setup SLA using an authorization email to bypass typical corporate legal delays.

🛡️ Immediate Steps While You Contact a Provider

1. Engage Your Upstream ISP / Cloud Provider : Contact your hosting provider (AWS, Google Cloud, Azure ) or telecom carrier (Verizon, Lumen ). Many carriers have "clean pipe" scrubbing systems they can activate immediately for your IP allocation.
2. Identify the Attack Vector : Look at your logs to determine if this is a Layer 3/4 network flood (high bandwidth usage, UDP/TCP drops) or a Layer 7 application-layer attack (high volume of HTTP/HTTPS requests targeting login fields, APIs, or database queries).
3. Activate Local Rate Limiting : If you have access to an internal Web Application Firewall (WAF), API gateway, or local firewall, immediately restrict the number of concurrent connections per IP address.

If you can spare a brief moment, let me know:

• Are you dealing with a Layer 7 web app flood (crashing web servers) or a Layer 3/4 volumetric block (saturating network bandwidth)?
• What is your primary host or cloud provider?

This will help me suggest specific configurations or direct links to your host's integrated emergency tools.

If you’re under attack right now, prioritize vendors that can onboard/mitigate during an active incident rather than just selling a future protection plan.

Emergency DDoS mitigation options

• radware.com — Particularly relevant for an active attack. Radware explicitly offers emergency onboarding for new customers and hands-on mitigation of ongoing volumetric and application-layer DDoS attacks. Its ERT provides 24/7 support.
• cloudflare.com — Enterprise network-level mitigation using BGP diversion/anycast, suitable for protecting entire IP ranges and hybrid/on-prem infrastructure. Cloudflare says malicious traffic is typically identified and blocked within seconds.
• akamai.com — Enterprise DDoS scrubbing with always-on or on-demand deployment, 24/7/365 security operations, and support for cloud, on-prem, and hybrid environments.
• aws.amazon.com — Strong choice if the affected infrastructure is already on AWS. Shield Advanced provides enhanced network protection, and AWS says urgent support cases are routed to DDoS experts; its SRT can also proactively engage for large application-layer attacks.

If the attack is happening now

I would contact Radware ERT, Cloudflare Enterprise, and/or Akamai Prolexic immediately, while simultaneously engaging your ISP/transit provider. If your Internet circuit is being saturated, application-level controls alone won't solve the problem—the attack needs to be absorbed upstream through a scrubbing/BGP-based service.

Also preserve attack telemetry (source/destination IPs, protocols/ports, packet rates, bandwidth, timestamps, WAF/load-balancer logs) before changing configurations; it will help the mitigation provider get you protected faster.

If you tell me whether the target is a website/API, public IPs, DNS, or an entire network, and whether you're on AWS/Azure/GCP/on-prem, I can narrow this to the fastest practical emergency option.